Anatomy of Electrocution

[@darkscienceyt]

Get your INFOGRAPHIC POSTERS here: questions4science-shop.fourthwall.com/

[@lewiskelly14]

Nah

[@johnopalko5223]

I'd love to but, when I go to that link, I get "403 Forbidden."

[@seraphina985]

You made a mistake when talking about what DC does, what you described is actually ventricular fibrillation and is what happens when AC passes through the heart. By contrast a defibrillator is a device which uses DC to stop the heart thus stopping the chaotic rhythm of VFib (Works on V-Tach too). This is actually where the device gets it's name because it stops fibrillation (Also works on V-Tach rhythms too) thus restoring the heart to a state of asystole from which the hearts pacemaker cells can hopefully kick in and restore a normal sinus rhythm. So for your DC example it should have shown the heart contracting fully for the duration of the shock since that is what happens and then it hopefully starts beating again when the current stops and the heart relaxes. Hopefully being for the obvious reason that the thing that put it in that state in the first place may also have damaged it beyond recovery.

[@em1osmurf]

@@0dulesduds the cap electrode steam-cooks the brain, and the skull explodes. the reason a face hood is used. very effective. boomers declared it as "inhumane" for murders, rapists, and torturers.

[@0dulesduds]

@@em1osmurf I believe it is very probably the worst way to die, now. It would be like setting all your organs inside on fire and melting forever; your tongue your brain your liver kidneys heart and probabgly last through and through even through death it would be like being in hell forever and cooked all through your death in hell.

[@Zizumia]

My dad is an electrician and he had a "no let go" shock when someone ignored the tag on the breaker and turned on the wires he was working on. He said he knew what was happening and kicked the ladder from under him which broke him from the wire and saved his life. Unfortunately the electricity damaged his heart and he has to take heart medication and routinely needs to get his heart checked for the rest of his life, but at least he's still alive!

[@kenzo_1172]

did he sue the idiot who turned the breaker on?

[@Wa3ypx]

Good Lord!

[@sacha_msky]

@@kenzo_1172 why would he ? It wasnt intentional

[@christopherdelcastillo0077]

This is why LOCKOUT, TAG OUT is a must.

[@williamdetempolivre]

​@@sacha_msky "[...] when someone ignored the tag on the breaker [...]" Intentional or not, the person ignored a tag that is there to warn others about the maintenance!

[@bunnyrabbit324]

This guy just explained resistance better than any physics teacher I've ever had

[@darkscienceyt]

Wow, thank you!

[@Robul96]

For real tho

[@stephenhipp7859]

That'll change when you get your electrical engineering degree

[@adamwalker2377]

KZbin shows up the uselessness of public school.

[@stephenhipp7859]

@Adam Walker paying attention in class is always an option. So are asking questions

[@eccentrix5026]

*Correction:* The term is Ventricular "Fibrillation" and not defibrillation. We doctors commonly call it as V. Fib. Fibrillation is similar to the word vibration or irregular contraction which is not a normal contraction of heart leading to it's normal physiology. Hence, "de-fibrillators" are machines used to stop the fibrillations or vibrations and contractions are induced through CPR.

[@aniksamiurrahman6365]

Thanks for the clarification.

[@Jgawalters72]

V-fib, De-fib. Hopefully the D-fib works and the heart restarts. Not as often as the TV would lead you to believe.

[@packtech]

Exactly. That is why the 'shocker' you see on TV is not normally to START a Heart. As per the name a Defibrillator is designed to STOP the Heart which is in Ventricular Fibrillation in the hope it will re start properly. A 'De Fib' machine MAY start the Heart if STOPPED, but is less useful than you may think. A massive thump in the middle of the Chest followed by CPR is a better shot.

[@michaliskaravelakis6803]

A defibrillator neither "restarts" a "stopped" heart, nor does it provide energy to keep it going. It is intended to terminate certain life threatening arrhythmias.

[@dwaynecaldwell7595]

Thank you.

[@ItchyDingo]

I almost died today from being electrocuted, 220v ac on a 2 Amp refrigeration compressor, I grounded a wire, and myself to the unit and got stuck there for about 3 seconds until I fell back off the ladder 1.5m to the floor.. I chilled for about 10 minutes and started feeling terrible, I could barely feel my heart beat and the muscles in my arms and hands totally contracted like I was having a seizure, I also felt like I was going into cardiac arrest so my work colleagues rushed me off to the hospital while giving me CPR, what a day.. I'm so happy to still be here, all I could think about is how much it would destroy my dad if I died, I think that's what saved me

[@7rodo]

🙏🙏🙏

[@FerociousPancake888]

You should never perform CPR on an adult who has a pulse…. Just so you know (hopefully not for next time though!) But yeah if you ever run into a situation like that with someone else, do not perform CPR on someone with a pulse. The only exception is if it’s a prepubescent pediatric patient with a heart rate of less than 60.

[@lordchadthe69thofsussex72]

"You can come into work tomorrow, right?"

[@ItchyDingo]

@@FerociousPancake888 interesting, thank you for the heads up, I had no idea what was happening to me though and I was not ready to die lol

[@FerociousPancake888]

@@ItchyDingo It’s all good, it happens all the time! It’s not harmful to your heart or anything, the thing is if someone is doing CPR correctly they can break ribs while doing it so it’s best to avoid a broken rib unless it’s absolutely necessary! Glad you’re still kicking.

[@davidvogel1756]

My paternal granddad was an electrician. I remember him having us four grandchildren hold hands in tandem: Grandchild #1 would touch the radiator and grandchild #4 would hold Grandpa's hand. Then with his other hand, Grandpa would insert the 'blade' of his nail clippers into the "hot" (-) hole of the nearest receptacle/outlet so we could all feel the tingly current, until grandchild #1 (usually me) chickened out and let go of the radiator pipe, which would break the circuit and the tingling would stop. Fun times! until Mom found out and all the sudden we had a different baby sitter.

[@ФилиппЛыков-д8е]

A real man your granddad was! Without such people, the world would be full of snowflakes.

[@elebeu]

We had a science teacher that invited the class to form a circuit by holding hands. One student would hold the sparkplug lead to a lawnmower engine magneto and the other would touch the crankcase after which he would pull the starter rope and the shock would travel around the room. Good times.

[@Wa3ypx]

I often wondered why you can pick up Radio Free Europe on your teeth's fillings! It all makes sense now.

[@MyLuckyDobie]

Lmfao.

[@tatellopitso]

😂😂😂😂😂😂😂😂sure your mom had to replace him

[@leokimvideo]

Seeing all this scared the hell out of me, i'm truly shocked

[@Lazzie_the_Psilocybe_Deity]

How dare….

[@TheGodParticle]

Good pun.

[@hootinouts]

Hardy har har.

[@Coockiez-007]

bud um tssssss

[@TommyCullen-VacuumConnisour]

Bro. you are everywhere.

[@NoName-cp4ct]

It's worth mentioning that, despite changes in EM field spreading with the speed of light (including changes when an electrical circuit is connected), electrons themselves are moving relatively slowly, with a speed of about 0.5cm per second.

[@kevin42]

Per hour*

[@infinityabyss2559]

Per second ?

[@thomaz851]

I didn't get that Can you recommend what to Google to research it further?

[@artisticdad4932]

@@thomaz851 It's true, I remember my highschool science teacher telling us this. The reason why the electric current works is because the electrons are in the material from start to finish

[@susmitislam1910]

@@thomaz851 Googling "drift velocity" should help

[@Bill-2203]

As an Electrician I can say with confidence that electricity traveling from one hand across the heart to the other hand really hurts, you really feel your muscles tensing 50 times a second fortunately I have habits to avoid a death grip and have never been shocked for much more than a second

[@crand20033]

I have been shocked by 120V household voltage more times than I can count. Yeah, it's not pleasant but it's tolerable. Just don't be standing in water.

[@johnno4127]

Made the mistake of touching both ends of a 4' fluorescent bulb one time, ouch!

[@modelrailpreservation]

From Europe, perchance? Much of Europe ueses 50Hz power, USA and Canada at least, use 60Hz. In some ways 60HZ is more dangerous because it can synch with the heart, and effectively stop it. 50 HZ does not synch so well.

[@budadi]

230v from my house and 30000+v from my motorcycle, that was hard. 😂

[@Justin-jy6fu]

Is avoiding long term damage from shocks possible as an electrician? I want to get into it but I don’t want people to pressure me into doing the job faster by skipping safety measures and not wearing all the PPE

[@lounaticlouie]

As an electrician, I have experienced "no let go". I had three fingers burned just like touching a hot frying pan. I was lucky enough to fall off of the contact. As an apprentice I had no business doing what it was I was doing. I am very safety conscious today. LOTO and proper PPE always.

[@zmba6924]

what do you feel in a no let go situation? any pain? itching? or nothing?

[@Justin-jy6fu]

I’m considering it for my career but I’m terrified of long term damage to my body. Even small shocks can cause heart issues. If someone wanted to stay safe by wearing PPE and taking time to check safety, is this a good career or is there a rush to get things done fast and people won’t like you if you do things properly?

[@covfefe1787]

@@zmba6924 there is no pain. I experienced a no let go shock as a child when I was between 6-8. I was looking for something in my garage climbed the table and grabbed a metal chain to turn the light on turns out that chain had an electrical current running through it. When I touched the metal wire my had fully grabbed onto it tight. It’s essentially an involuntary hand movement. You feel the current vibrating and flowing through your body and a buzz sound. You also feel your hands and arms get really hot to the point of burning. it’s hard to explain but you just feel a strong force flowing through your body. It tingles and makes your heart beat fast and feel a sense of impending doom. I don't know how I survived but that moment felt like minutes when it was probably seconds. I panicked and tried to pull my hand bit didn't work. Once I started feeling my heart pound faster for some reason I was able to yank my hand downwards and free myself and run away from the garage I told my dad like a week later. I truly feel that day that god saved me because that current had a strong grip on me,.

[@fastcar42069]

​​@@Justin-jy6fujoin the IBEW. im an apprentice in the IBEW currently, a little over halfway done. Im making more money than i know what to do with. The ibew will train you well on being an electrician, including safety. All the contractors ive worked for put an emphasis on safety, and almost all jobsites ive been on have not been so rushed that there was no time for lockout tagout. Working on live circuits is rare and discouraged, usuallly youll run into this in hospitals where turning power off can cost lives. Also, being unionized, if somehow you ever do come across a foreman on a jobsite who doesnt want you locking out a circuit, put your tools down and call the school (since youre gonna start as an apprentice) and tell the training director whats up. If the contractor lays you off for it, youll have another job in no time because the union hall will send you to a new contractor. I never worry about job security. Basically where im going with this is you wont have to worry about it. Most cases of people being shocked are because they play fast and loose with their safety and dont bother to test or lockout before working, not because foremen are forcing you deliberately into dangerous situations. If you want honest advice, if you are mechanically inclined or have worked in another trade before, and electrical interests you, then theres no better way than the IBEW and the opportunities and money are literally endless. Our package here in no mans land in the midwest is over 65 dollars an hour. Dont see many people making this kind of money.

[@Thundralight]

I had that happen to me also when I was a kid but I did not get any burns. I went to open the car door and could not let go of it--scary. My dad was doing something I guess with the car battery maybe

[@eltiobry3859]

Wow, so the entire central nervous system is shut down immediately after electricity is turned on in the electric chair. Meaning that the person receiving it cannot feel anything else but the initial shock. This also means that the first shock is to shut you down, the next is to toast your insides and the last one I have no clue why it would be applied... Maybe just to make sure you are dead by that point? Amazing... And terrifying...

[@sebastian8783]

damn those criminals going quick if only they can feel more pain.

[@zchen27]

If the electric chair is properly used. There have been cases where people weren't knocked out and were cooked alive for the full duration in the early days.

[@konspirationsteoretiker]

@@zchen27 I misread that as “cooked alive for the full duration in eleven days”. Now THAT would have been a show.

[@jasonsummit1885]

@@zchen27 Yep, it was even portrayed that way in the movie "The Green Mile" when the sponge wasn't soaked in the salt water solution.

[@kangsate3459]

@@zchen27 i remember it in rdr 2 side mission Poor fella begging arthur to kill him

[@insylem]

At 12:25 there is a slight error. 60 Hz means 60 complete cycles per second. That is 60 positave and 60 Negative parts of the wave. Totalling the electricity starting and stopping 120 times per second.

[@insylem]

@@assalaholiday the us power grid is 60Hz not 1Hz

[@limo-swine6537]

@@assalaholiday 1 cycle includes the positive and negative phase. Positive becomes negative when it goes through 0 and vice versa. So, for 60Hz the current goes to zero 120 times per second.

[@tomjacobson7623]

@@assalaholiday No, you are wrong.

[@graealex]

"there is a slight error" lol - the whole video is full of inaccuracies and obviously made by someone who has no knowledge about electricity beyond watching other KZbin videos.

[@51hankyspanky7]

@@graealex i.e. milliamps. I was like "What is this guy talking about?" LOL Heck I'll take the electric chair any day with that kind of power...and be seenin' ya next week at the local tavern for a drink or two.

[@garyhalsey7693]

I’m a former Weapons & Electronics Engineer in the UK Armed Forces. I remember that in the first lesson in my training, my instructor said this, “Electricity isn’t dangerous, until you forget that it is”. This one phrase has stuck with me my whole life. Respect it, and you will be okay. Get complacent, and it will bite you in a heartbeat!! As the earlier version of my comment appears to have gained some criticism, I have edited it to remove the offending phrase!

[@Redsky973]

Pretty sure a truer phrase has been said in the history of mankind

[@garyhalsey7693]

@@Redsky973 😂 Agreed.

[@camicus-3249]

@@Redsky973 You might have just said it

[@redblade8160]

Gary... What do you say to the people that have been struck by lightening?

[@233kosta]

What's the offending phrase?

[@baylenlucas8923]

A few nuances about electricity While the model of electrons moving in a straight line through the wire is useful, in reality they are moving in random directions with a relatively miniscule drift velocity caused by the electric field. Veritasium's video explains it well if you want to learn more: kzbin.info/www/bejne/pXrCiWWZgq2Bm5I "Rubber has a resistance of 10 -100 MOhms" Particular objects have a resistance, the way materials are measured is with resistivity. The formula for resistivity is: ρ = R(A/ℓ), resistivity equals resistance times cross-sectional area divided by length. The units of resistivity is simplified to Ohms*Meters but it is really Ohms per unit of Length per unit^2 of Cross-Sectional Area. For example, if an object had a cross-sectional area of 1 cm^2, a length of 1 cm, and a resistance of 100 ohms, that material would have a resistivity of R(A/ℓ) => 100(1/1) = 100 ohm-meters. An object of the same material with a cross-sectional area of 1 cm^2 and a length of 2 cm would have a resistance of ρ/(A/ℓ) => 100/(1/2) = 200 ohms. "When electricity passes through your skin, the high amount of resistance generates heat" For an ideal voltage source, higher resistance actually means there is less power P = V^2/R. Hence why electrical workers wear rubber gloves. However in real life, voltage sources have a source resistance so as the load resistance becomes smaller, the power will peak then get smaller(en.wikipedia.org/wiki/Maximum_power_transfer_theorem ). Adding the sponge to the prisoner's head decreases the resistance and actually results in a greater power transfer. The reason the sponge stops burns is because water has a high specific heat capacity and will reach a lower temperature than bare skin despite absorbing more energy. "This means the current would be turning on and off 60 times per second" It would be 120 times per second. In the flickering lightbulb, the times when it is on are the peaks and troughs of the sine wave, when electrons are moving fastest in either direction. The times when it is off are the inflection points, when the electrons are still.

[@Hultraman]

Don’t forget to put m^2 and m in the equation. It’s Ohm meters: for the example, it means that the resistivity is: 100(0,0001/0,01)= 1 Ohm meter. If we go to 2 centimeters, then it’s: 100/(0,0001/0,02)= 200 Ohms. Also, are you okay to say that while voltage is necessary for current, it doesn’t mean that you have to have a high voltage to have a high current ? The only thing bugging me is with U=RI. How does it work when you change the medium. For example, when it goes from your skin to your nerves. Is U staying constant and I changing to match it or is it the other way around ?

[@baylenlucas8923]

@@Hultraman You're right, what I had was Ohm Centimeters: 100 Ohms (1 cm^2 / 1 cm) = 100 Ohms * (1 cm) = 100 Ohm cm * (1 m / 100 cm) = 1 Ohm Meter 1 Ohm m / (1 cm^2 / 2 cm) = 1 Ohm m / (0.5 cm) = 1 Ohm m / (.0005 m) = 200 Ohms

[@Kwauhn.]

A lot of great details that are 100% unnecessary for the video. Still useful knowledge though 😉

[@neutronenstern.]

I think you got something wrong there. The reason, why the high resistance of your skin, will make it get very hot,is that the rest of your body has got lower resistance. And thus your whole body restistance is almoust only set by your skin. And thus almoust all the voltage across your body acts across your skin. And thus the most power dissipates on your thin skin, and thus it burns. You can maybe relate to this in a circuit this way: If you take a 0.00001Ω wire and short the main soccet, then while there is flowing lots and lots of current, and thus the overall dissipated power is very large, the dissipated power on this wire is very very low, and thus it wont get hot. Instead if the breaker doesnt pop, the wires in your house will get very hot. But now if you put a 100Ω resistor across it, there wont be a lot of amps flowing, and thus overall power is very low. But still this resistor will get very hot, cause approx 500W are dissipated across it. The maximum power you will get out of the socket however (if it had no breakers) is if you use something, with the same impedance, as all the wires from the power plant to your socket. (you can derive this by the derivative of the power consumed by a resistor in series with another resistor).

[@graealex]

Don't even try. The video is bs. It might outline some core concepts, but in detail it's full of inaccuracies, basically all units are explained wrong, resistors are explained wrong. It's a nightmare for any EE.

[@TroublTurtle]

this video helped understand electricty and the dangers waaaaaay better than what I'm learning as a Mechatronics engineer, thank you very much!

[@jacobantonelli]

These are really informative and interesting. Your channel deserves more recognition

[@sundog486]

I once had a "no let go" experience when I pulled apart 2 metal connectors. I danced about for a while, my colleagues thought I was joking around, but soon realised that it was serious when I fell and pulled one of the cables from it's location. I was only 19, but my heart was throbbing for a long time!

[@allanrichardson9081]

Higher frequency AC is less likely to be lethal than DC or lower frequency AC, because of the skin effect. This tends to make current to flow more along the surface of a conductor than in its interior (because in the interior, the changing magnetic field induces reverse voltage that causes electrons to repel one another). This is why a Tesla coil doesn’t kill; most of the current stays on the skin increasing the resistance and reducing current. Inductors used to tune the frequency at which a high powered radio transmitter operates are often hollow pipes to save weight and cost, since the current only flows on the surface.

[@brad8122]

1 KHz is the danger spot . 1 KHz is more dangerous than 50Hz, the reason for that is at that our nervous system also has more affinity . What do you mean by high frequency?

[@azzy-551]

@@brad8122 im pretty sure around 20kHz is when the effect is really noticeable.

[@TheMightyZwom]

@@brad8122 "What do you mean by high frequency?" Haha, I like that question! Because it strongly depends on who you ask. I once talked to a physicist who told me "the skin effect is a low frequency approximation". I guess it all depends on the frequencies you usually work with :D

[@mernokimuvek]

Skin effect only applies to good conductors. Above 20 KHz, you simply dont feel it because ions dont have time to move.

[@jdgower1]

At about 12:26, there needs to be a correction made. At 60 Hz the current "turns on and off" (reverses direction) 120 a second - not 60 times. This is because a Hertz is based on the regularity of a full wave. One full wave includes two 'zero-cross-points' between negative and positive, therefore, there are two "on-off" cycles per Hertz. 60 X 2 = 120.

[@bryede]

Another reason lower AC voltages are fatal is because the peak voltage is considerably higher than the RMS voltage, which is the figure used to convey the average amount of work done by a voltage that is always changing.

[@fastcar42069]

What? This is literally bullshit. None of this is factual and none of what you said even makes sense. rms Being a function of the sine wave, a peak voltage is always going to be proportional to the rms. 120v ac has 170v peak voltage.

[@Davechow12]

My Dad is a handyman by trade and a consummate do it yourselfer, but he never messed with electricity. He’d fix most anything in the house, but when we had electrical issues, he always hired a professional.

[@madmvd]

Found the electrician.

[@vcdgamer]

That's a smart man right there.

[@rebelroar78]

My dad is an electrical engineer. He still has called an electrician to get electrical work done at our house. He doesn’t have much experience actually installing and servicing equipment.

[@rebelroar78]

My dad is an electrical engineer. He still has called an electrician to get electrical work done at our house. He doesn’t have much experience actually installing and servicing equipment.

[@rebelroar78]

My dad is an electrical engineer. He still has called an electrician to get electrical work done at our house. He doesn’t have much experience actually installing and servicing equipment.

[@Hiddenus1]

Muscle contraction due electricity is something my dad taught me when I was 4. He taught me to (only if there is no other way) to check surface of potentially electrified object with outer side of palm or finger.

[@hungry_khid1007]

What outerside

[@MichiganPeatMoss]

@@hungry_khid1007 Perhaps with the top of a hand and/or finger.

[@geniusdrummer643]

@@hungry_khid1007the back of ur hand

[@ltmoistlipsiii5387]

Yeah no dont use a finger even that can wrap around if you aren't carful

[@WJCTechyman]

@@geniusdrummer643 In one of his physics of electricity classes, my physics teacher would plug in his demonstration hot dog and touch it with the back of his finger. He told me that if you were to touch something electrically energized, the pull factor would make your hand contract away from the electric current.

[@MeatPez]

Dude explained it better than any teacher I ever had lmao. I really like the water analogy.

[@wildlifewarrior2670]

I hope you know this guy read it right

[@Number6_]

Like any analogy it gives you a completely false idea.

[@janbruhovsky7247]

The water analogy is really common when learning electricity. I work 90% of my projects in DC, and almost whole of my knowledge is based on education videos on youtube, or internet articles.

[@aydenburris8631]

11:10 defibrillation is the return to normal beating. Fibrillation is the uncoordinated electrical activity

[@robertstewart1223]

Wow. This was a fantastic video! I think I may have learned more about the difference between AC and DC current here than I did through all of science class.

[@aniksamiurrahman6365]

Thanks dude. Each time I see these morbid videos, I feel really lucky. Also, lucky that we got an educator like you. I work in Biotech and you are really inspiring.

[@darkscienceyt]

Wow, thanks!

[@JJ-Streaming]

If only it was accurate. Resistors resist voltage now lol next diodes kill current

[@fahmi2186]

Correction: Resistor does drop the source voltage, but the main thing it does is "resist" the current. And it's the high current that kills the LED, not the high voltage. One other thing, the resistor burns when it receive high power (watts). It won't burn if you connect it to high voltage source but little to no current, and vice versa.

[@adirondacker007]

Saved me some typing! Thanks!

[@JKPhotoNZ]

Also, the fact that there is a voltage drop is because the LED has resistance (ignoring forward voltage drop for the sake of simplicity). This was a basic mistake that really frustrated me.

[@evanschristian4061]

😍 Thank you. I was looking for this comment.

[@AFRspace]

I was gonna say basically the same thing I know he was talking about continuous current sources but static shocks can upwards of like 40 amps for a very short time with little to no harm to the body.

[@AndreA-dl5po]

Absolutely do not do the electric wood crafting depicted for a few seconds in the video. It looks cool but is ridiculously dangerous and has killed dozens of people.

[@astro_cat030]

I love how Electroboom is added and got a shout out and how funny yet educational this is lol. I subbed because of that i love you

[@Sir_Corgerus]

Here's a *shocking* story of mine: In the summer of 2021 I did volunteer work for a farm that has many farm animals including horses, mules, and donkeys. One day I was tasked with pressure washing various pieces of equipment. So needless to say my jeans were soaked. After pressure washing I helped out with moving some animals to the other side of the pasture (from outside the barn). I went back inside to close the gate, left hand holding the chain but I had to step closer to get a hold of the gate. My left shin touched the high voltage lines that are used to deter animals from trying to climb the fencing, and the electricity went from my shin and out my left hand to the chain. I felt no pain at all, but it felt like my chest caved in for a split second like I was punched really hard. It made a super loud bang, and I was on my knees for a moment. It seems to me like most fencing uses DC, so I'm guessing this is DC as well which would make sense because it just felt like a punch with no feeling of vibration or humming noise, just a bang.

[@coreinc.9658]

MY DUDE. My entire life people have tried to explain to me how electricity works, as in what voltage and current is and what AC and DC are, and ive just never been able to understand it at all regardless of how they tried to explain it to me. This random video that showed up in my recommended explained it flawlessly to me in under 15 min. And i also now know why AC is more dangerous. NICE

[@gabrieljuliano495]

I learned more about eletricity in this video than in the 3 years of my High School

[@user-fj4ih2uk9o]

Idk abt that 1.

[@PatrioticSeer]

Or you’re one of those kids who disrupts the entire class…

[@gabrieljuliano495]

@@PatrioticSeer The physics teacher was designated to teach about the importance of water, for three years.... A third world country teaching about the enviroment has it's price

[@JamesElmore-b1j]

Outstanding explanation! You managed to teach basic electrical theory, physiology and pathology at a perfect level to understand the process of electrocution. The only mistake I could detect was the use of the term "ventricular defibrillation". Defibrillation is the action of correcting fibrillation, hence the term "defibrillator" associated with life saving first aid machines. The correct term for the pathology is "ventricular fibrillation". I mention this only because there could be confusion regarding defibrillator machines; everything else about this video was excellent!

[@zephyfoxy]

As ElectroBOOM covered in one video, AC is also more dangerous because our bodies act as capacitors to some degree, and AC flows more easily through a capacitor than DC does. He demonstrated this by showing that he did not receive as painful of a shock from DC voltage as he did from AC.

[@JonFrumTheFirst]

Current does not 'flow through' a capacitor - a capacitor has an insulator inside it that blocks current. Your mistake is a common one. Capacitors block current, so they're used to block DC. AC is said to 'pass' current loosely because electrons are attracted to and then repulsed from the plate on the far side of the capacitor because of teh charge on the plate - so it 'seems' like AC current 'passes through.' No electrons actually pass through, so no current.

[@mopar3502001]

DC can't pass through a capacitor. If it does, the capacitor has failed.

[@TheMightyZwom]

@@JonFrumTheFirst I wouldn't call that a mistake. Saying current flows through a capacitor is a commonly used simplification. Just like saying "the sun rises in the east". Everyone knows the sun isn't rising (it is obviously the earth's movement relative to the sun that causes the observed effect). But everyone ist still saying it does. Some goes for AC currents and capacitors imho. Oh, and if you want to get really technical capacitors do pass DC current, since no insulator is perfect. So they have a parasitic parallel resistance (often called EPR, not to be confused with ESR, sometimes "hidden" behind a self discharge time constant in datasheets).

[@JonFrumTheFirst]

@@TheMightyZwom I take your point, but I'm also sure that many uneducated people really do believe that caps pass current - because they've been told so. Similar problem in biology - using figurative language to describe evolution that is literally incorrect. Fine for students who have learned properly, but confuses the general public. Species don't 'try' to evolve - it just happens.

[@TheMightyZwom]

@@JonFrumTheFirst Yeah, okay. That is a problem, I do agree. Maybe I reacted too harshly - especially since I'm usually the first to cringe at false statements in for example "edcational" TV shows. They always mess up electrical engineering which makes me wonder what else they get wrong (where I don't have the knowledge to realize the mistakes).

[@susmitislam1910]

Correction: ventricular *fibrillation*. Defibrillation is the process of restoring normal electrical activity within the heart once it's gone into v-fib (by giving a properly coordinated electric shock).

[@julekakillashandra589]

I heard that they botched the first ever electric chair execution. Apparently it was a gory mess, and the condemned man was reduced to a pulp. One guy commented that being chopped up by an axe would’ve been a more humane way to go.

[@dadeo8957]

I was working near a large parking lot several years ago. A fellow nearby was working on the lights in the parking lot. At some point his coworker turned the power back on thinking the electrician had completed his task. The electrician, working from a bucket truck let out sounds of anguish that I will never forget. I ran over and hit the emergency lower button on his bucket truck which lowered the bucket about 6 feet. By this time all was silent and the coworker was standing beside me. He lowered the bucket to the ground and we walked over to check the condition of the electrician. Although burned and still in a great deal of pain he had survived. How did I know about the emergency lower button on the electricians bucket truck? I drove the identical type bucket truck for a different company and had been dispatched to the adjacent lot. I just happened to be in the right place at the right time.

[@scary7371]

11:07 It's called ventricular fibrillation (VF) and defibrillation is a procedure performed to stop VF

[@billbauer9795]

When I was a small kid, I stuck scissors into an electric outlet, and experienced an electric shock. I still remember the sensation. I wonder whether I could have died that day.

[@thelight3112]

It's possible, but luckily the nature of outlets means that the contractions from a shock will pull you away from it. I once did something similar when I was very young, but it was a 277v lightswitch. I thought someone had punched me.

[@wingjaigaming8240]

I also did the same thing. When I was around 12 years old I inserted a nail into an electrical outlet, there was a sharp, vibrating pain as if my finger got cut with a vibrating knife. Maybe my finger wasn't very sweaty so not a lot of current passed through me, the muscles on my body didn't lock up and I pulled my finger away immediately. I was lucky to survive without any injuries, learnt a valuable lesson that day.

[@MS-715-7Y]

At age 8 or 9, I took a small motor from an electric toy train, connected two wires on the electric conductor tabs, and then inserted the wires into the left and right slots of the socket. I wanted to see how fast the motor would spin with so much more energy than a 12v battery. The motor spun for about an instant; but it immediately shorted out with a spark and smoke, startling me. Words cannot describe the level of disappointment I experienced by not even getting a little visible spin from that tiny motor powered by 120 volts! For reasons yet unknown to me, a weird feeling came over me, and I decided not to try that again with any other tiny motors that I might have extracted from old toys. There was a strange instinct to stop this!

[@MultiDominic111]

the chance to die just by "touching" the outlet is like 0.5%... i got at least 50 times shocked and i am still alive :) stop thinking that if you touch any current you will die like 90%... most of the time its nothing more then a little shock that wont do anything (self experiance)

[@billbauer9795]

@@MultiDominic111 If completing a circuit with a live outlet is relatively safe, what would make it unsafe?

[@garnix6390]

Very interesting! Now what would interest me: Would there be a difference when someone has already a damage in the nerve system like demyelinization?

[@aniksamiurrahman6365]

Wow! That's a very good question.

[@limo-swine6537]

Not much

[@patscott6365]

I have axonal damage with some demyelination caused by overexposure to now banned nerve poison. Every so often I get "electric shocks" in my feet, enough for me to suddenly shout out. I explain to onlookers in the shopping centre that my foot caught in the shopping trolley. ☹

[@YanYansanu]

What a cliffhanger, now you make me curious about why they flip the switch 3 times for different durations of time..

[@LendriMujina]

From a quick looking-up, the first shock (2300 volts/9.5 amps) is for knocking you out. The second shock (1000v/8a) is the most damaging one and slow-cooks your organs. The third shock (2300v/9.5a again) is to deliver the kiIIing blow if the second doesn't do the job. This is just the procedure for Florida, however. It varies by state. Some other places don't alter the voltage or timing at all, just flipping the switch, letting it cool down, flipping it back on, etc. at regular intervals and a constant charge.

[@YanYansanu]

@@LendriMujina eyo cool thanks!

[@lgmx-peacekeeper3204]

It's to reduce the amount of burning of the skin beneath the electrodes. The initial high voltage jolt (~2000v) was designed to inflict damage on the brain to produce instant unconsciousness and the lower voltage (220v to 1000v) damages the rest of the body which is why the lower voltage phase is usually much longer than the high voltage phase. Although some states did cut off the power between jolts, most changed voltages automatically without disconnecting the power in what is called a 'cycle'. The person throwing the switch (or more often pushing a button) typically had no control over the system aside from turning it on, the system would do all the work and shut itself down when the cycle was complete. If the person was still alive, the 'executioner' would be told to push the button again.

[@RoadWarrior-lo9vt]

I'm incredibly lucky to be alive. Back in the 90's I had to close the electric fence gate at work by opening the box and physically pushing the relay to close it. I was young and too dumb to say no to the boss. Anyway, one winter night, I was standing in slush up over my ankles and my work gloves were wet and I got a shock that went from my hand to my feet. It lasted only a second or two before I pulled my hand away. I guess what saved me was the fact that I wasn't actually gripping anything, I was just pushing the relay with my finger. So I didn't get that grip lock thing.

[@Praktical_]

That live leak reference was too real 😅. LL, Ogrish, rotten etc taught me some very valuable lessons such as, always br grounded, wear a seatbelt, don't piss off narcos, don't piss of jihadists, don't piss off neo-nazis and in general just don't piss of anyone.

[@RealJohnnyDingo]

not gonna lie, Internet videos made me give up my dream of driving a forklift in a steel mill.

[@userPrehistoricman]

You want your appliances to be grounded, not yourself. If you are grounded then there is a clear path for electricity to flow from a live wire through you.

[@wolfetteplays8894]

Wearing a seatbelt is akin to basically hanging and breaking your neck. It has an even higher mortality rate, but no, big auto doesn’t want you to know that

[@azzy-551]

​@@wolfetteplays8894 still using controversial statements to get people to look at your channel? Or are you just generally this despicable? this is my second time finding one of your comments. It's like you're my own niche lolcow.

[@ReaIHuman]

Some day your video will be shown to kids in a classroom to explain electrocution.

[@The1andOnlyWog]

Great video, one quick nit-pick though. At around 11:00 you start talking about the effects on the heart, and say that it can cause "ventricular Defibrillation", and you're ALMOST right. It actually causes "Ventricular Fibrillation", which is why the "shock machine" they use is called a "DEfibrillator" because it ends fibrillation, or DEfibrillates the heart. I know, medical terminology can be kinda confusing sometimes. All in all, a very tiny error in a great video! Keep up the amazing work!

[@irathernotsay2627]

I fucking love you and you’re videos man. I don’t care how long I have to wait. You’re doing great

[@prakharchaurasiya8107]

This video doubles as a pretty good intro to voltage, current and resistance. They should use this in school lectures.

[@inregionecaecorum]

I can remember putting one thumb on a live pin and the other thumb on a neutral pin of a broken plug, and that gave me a shock and a half at the full UK mains voltage. Just about the worst thing you can do, but it didn't do me any significant harm other than to get my heart beating really fast. Whatever happened I survived it.

[@steelinyt5516]

I love your channel mate. I have watched every single video of yours. Pls make more videos mate, be consistent and let's hit that 500 k mark.

[@timix2g797]

Little correction: its the Synapse/Motor end plate where the chemicals get released. The Axon is the whole extension of the nerve, where the signal travles through

[@Radjehuty]

To add to this, there are no voltage gated channels, or any channels within the myelin sheath as depicted in the video. They act as insulators, between which are the nodes of ranvier where the voltage gated channels actually do reside.

[@alexbowman7582]

The current in AC isn’t turning on and off 60 times a second (in the US), it’s turning on and off 120 times a second, it’s a sine wave with 2 peaks, a + and a -, and 2 at 0 volts.

[@fatalerror5278]

Hope this won't get age restricted like the decapitation one.

[@ON5ALE-Alessio]

7:33. The reason why in italy it is mandatory to have a 10 mA differential disconnector guarding your bathroom

[@pedroff_1]

Muscles also have voltage-gated ion channels, mostly calcium, and they're used for the contraction as well. Is there any mechanism I'm ignoring that makes it so they, on their own, can't explain the shock-induced contractions?

[@YummyCracker]

Is that where the 1% of calcium goes?

[@pop5678eye]

3:38 Incorrect statement: 'not damaged by high voltage.' Technically it is current that causes the damage. While current depends on voltage you can have high voltage situations that cause little to no damage as long as the current is low such as with the high resistor described in this part of the video.

[@edwardpate6128]

The never ending debate, do the electrons move or do the holes between them?

[@DDLazlo]

Dayum! One of the best explanations of shock I've ever had! And I'm a lifetime electrician!!

[@TheMightyZwom]

60 Hz AC is NOT turning on and off 60 times a second. As you show in the video it changes direction, so to speak, as a sinusoidal wave. So it is positive 60 times a second and negative 60 times a second. If you call the peaks "on" and the zero crossings "off" this results in the current turning on and off 120 times a second. This, btw., is the frequency of the humming you might hear close to electrical equipment.

[@Simulacrum84]

Great video! 11:09 small correction here, that erratic electrical activity within the heart is actually Ventricular Fibrillation (Vf). Defibrillation is one of the treatments; an electrical “shock” across the heart.

[@catherineharris4746]

WOW! What a powerful/ educational/ thrilling/ scary/ factual breakdown of electricity/electrocution!😱👍👍👍👍👍👍👍

[@PMA65537]

4:15 Rubber does not have a resistance as its own property. It has a resistivity. A particular piece of rubber has a resistance depending on length and cross-section.

[@joe18425]

I learned about electricty when I was three years old. I was singing into a kettle lead which was plugged into the mains. I stuck the kettle lead in my mouth and woke up in the hospital minus a top lip.

[@KSparks80]

Is your favorite big dinosaur a Thyranothaurath Rekth? lol

[@bossinthisgym]

@@KSparks80 💀💀💀

[@ncedwards1234]

8:15 you skipped some relevant steps. Achetylcholine causes muscle contraction by creating action potentials in the muscle cells. As in acetylcholine acts as a ligand to the muscle cells' ionotropic channels, specific sodium channels that allow sodium flow intracellularly. Not all details are important or interesting, but my point is that in this chain reaction, one of the steps is changing the voltage polarity within muscle cells, which in the case of electrocution is already happening without the need for motor neurons to release acetylcholine.

[@nikkiwikki73]

I don’t think anyone has mentioned it, but I think the reason why the guy at 13:17 has that face gear on, is because your eyeballs can sometimes pop out (or melt) of your skull during electrocution, as well as bleeding, vomiting/release of _all_ body fluids. There’s muscles everywhere. Apparently, (and go figure) people didn’t like seeing those things on their public execution day excursions, nor the contortions your face makes thanks to all those facial muscles being zapped, indiscriminately, all at once.

[@jamie0]

As an added layer of insurance, after you're sure you cut power to a circuit and you have to make contact with the dead equipment, it's always a good habit to make that first contact tap with the back of your hand, this avoiding "no let go".

[@ams4328]

or just wear insulated gloves and use a multimeter or voltage check. palm or no palm, it can kill. why tickles the bears foot if you can avoid it

[@bookofgenesis1.40]

My father was born in 72, being the youngest of [then] 9 siblings he wanted to become a electrician but he was born colorblind (red/green) and wasn't allowed to be one as back then cables was color coded. But damn he proved to be quiet effective in repairing electronics(buying defected Ps1's, Ps3's). When questioned he answered that it was either one damaged capacitor or a bad soldiering that had to be fixed or a bad CD reader.

[@pierreuntel1970]

The resistor limit the current which causing voltage drop, if left floating then the voltage isn't affected

[@AlecKristi]

12:25 - 120 times per second. Hz measures a full wave, so there's 2 zero volt events per 1 Hz.

[@jokotri2186]

From now on if I ever had kids, I'm buying those electrical socket blockers

[@fionascookie9598]

I can't believe I've learned more about the physics of electricity in a video about electrocution than in 5 years of physics classes... I hated the topic because I couldn't really follow but this is a very simple and straightforward explanation of all the basics.

[@DoomFinger511]

I'm surprised you left out that the electric chair was invented by Thomas Edison as a marketing ploy to discredit Nikola Tesla and his new AC electricity.

[@okaro6595]

Actually Westinghouse. Tesla was a relatively minor operator in the game. He later inflated his role an other followed doing so. Edison said that killing with electricity should be called Westinghousing. Tesla's major contribution was that he was the first to develop an AC motor but it took others years to make it practical and also it is not the motor we use now. It was invented by Dolivo-Dobrovolsky. Tesla's fame came from the Tesla coil and because of that Westinghouse used his name in advertising. The fact that US uses 60 Hz comes from Tesla just as European 50 Hz comes from Dolivo-Dobrovolsky so that is Tesla's lasting contribution. In general motors liked lower frequencies and lighting higher. 50 and 60 Hz were compromises.

[@DreQueary]

9:12 I saw that video. I don't know if such a situation shuts off pain receptors, but if not he was suffering unimaginable pain for like 8 seconds. What a horrible way to go.

[@fel9432]

Static electricity that you accumulate walking on a carpet on a cold day has a high voltage so it shocks you when you touch a metal doorknob, but does not kill you because the current is low....

[@Coolgiy67]

No

[@Fasteroid]

The current can actually be quite high, but it's incredibly short-lived so no real damage is done.

[@okaro6595]

Actually the current is several amperes but a very short time. Remember Ohm's law I = U/R.

[@0blivioniox864]

Just came across this channel, and I'm glad I did... real cool stuff!

[@Kepler_2258]

also with Electricity (AC and DC) you can have a 100 Amp power supply and it wont kill or burn you, that is, as long as its below 2-3V, you can rewire larger transformers to pump out a Crap Ton of current but the voltage is Way too low to pass through your skin

[@okaro6595]

Actually below 20 V - it is not a coincidence that laptop power supplies provide 19.5 V and even that standard is done on safe way, generally it needs to be 50 V for AC to be dangerous.

[@Kepler_2258]

@@okaro6595 yea, however if your hands are wet you can feel the electricity a tiny tiny bit at 20v, i used a laptop adapter as a 20v 10a power supply, and i was holding it onto a circuit after just washing my hands (they weren't drenched but a little damp) and i could feel a very very light tingle, not at all painful but i could still feel it

[@GiuseppeBertini]

The depiction of the nerve cell starting at 7:40 is incorrect. The long axon, responsible for transmitting impulses to the next cell, is shown accompanied by a series of oblong shapes, obviously representing myelin-forming cells. Myelin, however, acts as insulator and DOES NOT possess the ion channels involved in stimulus transmission. Channels are instead placed on the axon itself, in the nodes of Ranvier, i.e. the brief gaps between individual myelin sheaths.

[@nBasedAce]

I love toast but I am still waiting for a machine that can turn toast into bread.

[@zockertwins]

There actually ist such a machine! It was invented by this guy: kzbin.info/www/bejne/nnSboX-am8iFldU

[@allanrichardson9081]

A time machine to reverse the direction of change in entropy.

[@kyyyni]

8:00 The picture is misleading. The "thick" parts of a nerve have a myelin sheath. Voltage-gated sodium channels exist only in between the sheated parts, i.e. in the "thin" sections.

[@siggyretburns7523]

Omg. You just gave me the foundation for a brilliant comedy skit. A science teacher that is hellbent on thoroughly explaining everything is explaining electric currents in the body. He accidentally electrocutes himself and suffers the "no let go" effect. So when a student sees whats happening, he tells him to "let go". He says he cant. The student then asks "why not?" So the teacher explains everything you said verbatim from 7:30 to 8:53 all while he's getting juiced. He's even trying to use the pointer stick on the chalkboard. Meanwhile, the melodical music is playing in the background. Oh its gotta be good. 😂😂😂

[@miguelisaurusbruh1158]

Probably into the top 10 best youtube videos i've ever watched

[@SohomBhattacharjee]

At 11:04 I believe the correct term is "Ventricular Fibrillation". Defibrillation is the process of shocking the heart back into rhythm. It would be nice if you can correct this. Great video otherwise. :)

[@prettypuff1]

7:42 best explanation of muscle movement I needed this for a physiology test

[@geetar82]

Okay kids, remember, don’t pee on electric fences.

[@7-ten]

Good tip. Also don't touch it with the tip.

[@DrMxy]

Makes me wonder, what's the current for tasers and stun guns?

[@avinci3116]

Tip from an electrician. If you want to test if a wire is live or not, always use the backside of your hand. If the wire is live you will automatically contract away from the source. Ofc you shouldn’t test it in the first place but there may come times where you think “oh the fuse is broken, I can touch this part” so it is always good practise to touch everything with the backside of your hand first

[@nova5069]

Taught me more than my science class

[@MrTommyboy68]

I did A/C in Phoenix for years. We wee on a job changing out a rooftop unit. I was doing prep work to remove the old unit while our sheet metal guy was prepping the new transition. We left the unit run as long as possible so as to not inconvenience the customer. He had removed the side panels and went to put his shoulder to it to move it enough to break it loose from the exterior ductwork. I was on the other side of the unit doing my prep work and I heard a loud BANG and looked up in time to see him sailing off the roof. I ran over to the edge and looked down to see him laying flat out. I got down as quickly as I could and the rest of the crew came running. I got to him and he was trying to sit up and he was very groggy but alive. After 15 or so minutes the boss insisted that we take him to the ER to get checked, which he didn't want to do, but we prevailed. We were unsure of what happened so we killed the power and finished the job. The crane operator say the whole thing and was surprised that he was still alive and walking around. The next day, he was back at work, a little sore, but OK. He showed us the two burn holes IN HIS SKULL where he came in contact with a 45 mfd capacitor (RUNNING)and the shock knocked him off the roof. He then dropped trou and showed us the burn marks on his leg where the electricity came out. The doctors were amazed he survived. If you have ever been bit by a capacitor on a running unit, you WILL get the shock of your life and if you don't die, you will wish you did. This guy was as solid as an old oak tree not an ounce of fat on him and that is what saved him. He DID suffer long term muscle pains, especially his leg.

[@firefox1136]

Interesting, but you forgot to mention that at a high enough frequency (above 20khz) AC can become much safer than DC, since then the polarity switches to fast for nerves, which is why you cant feel the electricity at those high frequency's (Also the skin effect applies here, but you would have to raise the frequency much further for most of the current to pass over the dead skin and not the living tissue). The electricity can still cause severe burns tho, even at high frequency's, but you just wont feel it which is kinda terrifying by itself...

[@impromptu24]

You mean ventricular fibrillation. Ventricular defibrillation is what we do when we use direct current to cardiovert ventricular fibrillation (that abnormal heart rhythm you were talking about) back into normal sinus rhythm

[@Ghost_70026]

Thank you for traumatizing me with this very informative video

[@darkscienceyt]

Any time!

[@Ghost_70026]

@@darkscienceyt 🙂

[@zapszapper9105]

I am an electrician I got a shock through my thumb across the back of my neck and to the other arm where I was holding a grounded metal light fitting while trying to replace a cover on a ceiling rose fitting with an exposed live terminal, During the shock I tried to swear but could not say anything I was up a ladder any way my thumb came off the live terminal I had touched with it. I must have still been able to yank my hand away. I got down off the ladder, no one around me even noticed it was an office full of people. I looked at my thumb and notice a deep burn ,almost like a pin prick, but right into my thumb. Up shot, never be in a hurry, never be tired, when working with electricity. Back then we were told to do things live so as not to disrupt the office/factory etc. Now we are not allowed to work live. Up shot be careful electricity plays for keeps. And refuse to work live. Come back in the weekend, have someone else watching you as well, that might give a boss grey hair but not you. When I mentioned it to my boss he laughed and said you will have a hard on tonight. What should have happened is it should have been reported, written up and I should have had an ECG of my heart. Any ways please be careful and take your time with any thing electrical and tell the boss to get F--ked if he objects. ANd dont do live shit, and test before you touch always. Unless you know the cables are dead as in a new installation where the DB board is not installed yet. Never take someone else's word. It is so easy for mistakes to happen, like pull the wrong fuse or circuit breaker so ALWAYS test before you touch using prove test prove, Lethal combination, is tired, in hurry, in a mess, and mind on something else. If that's you . Sit down value yourself, and have someone else pay a little more or make a little less, You have a right to go home at night. And not have to have someone visit you in hospital from your home, or worse. When locking off switches and tagging, use your own pad lock put the key in your pocket, don't leave it in the key switch, When pulling fuses, put them in your pocket so no one else can plug them in. Unless you are a professional, leave it to someone who is. That way you stay legal, and you and your family stay alive and your house not burned, even if the pocket is a little lighter.. .

[@Humongous_Pig_Benis]

0:59 Anatomy of hatcheting the head 26 times. That would be a good video. Do it!!! Just! Do! It!

[@ClumsyMedic483]

The expression is "ventricular fibrillation." DEfibrillation is what paramedics do to stop the problem. (AEDs are Automatic External Defibrillators)

[@princenoah21]

"It's not the volts that kill you, it's the amps" is very unconvincing.

[@HighPoweExpress]

By 3:34 your statement it's incorrect, the Resistors are not really made to lower the voltage, are made to resist the current (electrons) flow. A LED is almost like a short circuit. A resistor in serial with a LED are use to create a resistance to the electrons path, regulating the amount of electrons passing thru the LED. If you not add a resistor, the amount of current will be the maximum produced by the source, causing over heating and eventually blowing up the LED. With one resistor or without resistor, technically the voltage remains the same. Combining two or more resistances in serial creates a voltage drop effect between each resistor.

[@jszlauko]

Basically for a circuit with an LED, or a diode for that matter, the purpose of the resistor is to provide a place for the voltage drop to occur as it cannot all occur at the LED (or diode). For instance, a diode will have a voltage drop of about 0.7 volts. So, it you applied, say, 9 volts directly across the diode, it will get fried as it HAS to have a voltage drop across it of 0.7 volts, and so forcing it to have a 9 volt drop will fry it. By having a resistor in series with the diode, the diode with have its required 0.7 volts across it, and the remaining 8.3 volts will be across the resistor.

[@sciencenerd7639]

One time I was talking to someone who was selling tazors and she said "volts hurt and amps kill". Later I mentioned this to the guy I was married to at the time and he said "Nope, it's just the opposite, it's amps hurt and volts kill." Nice to know that it was both volts and amps all along.

[@okaro6595]

Volts are like a gun and amps are like the bullet. Volts are what is dangerous but it is because they make current go through the body. There is also time and the energy to consider. A normal static shock is thousands of volts and several amperes but it is harmless as the total energy and the time are very small. The are not independent things but linked through the Ohm's law.

[@abdullahk3300]

Sir You are The best lecturer in my whole Life!!!...u made Medicine nd physics that much simple!! God bless u nd Waiting for more videos

[@geoffgunn9673]

Wow, now this gives me a good insight to what would have happened to me when I hooked up on 240v ac on mains so no ground trigger. Went from index finger of left hand to the palm of my right hand for at least 2 minutes. Watched my daughter walk out to the garage and get food from the freezer and I couldn't do a thing to let her know. Funny thing is, when I hooked up, I just thought 'Oh well, this is it' with no sense of dread or forthcoming doom. Nothing, just knowing it was game over. Once my skin had burnt enough I broke contact from my palm, and then felt like someone had just beat the living shit out of me. I also know that I changed that day, mentally and physically. I no longer get hunger pains or any craving for food. And a extreme sense of voltage differentials in the milliamps and millivolt ranges.

[@IAmUnderscore]

Dude, what??

[@henkdekraai5290]

Well, 7:55 is actually incorrect as these channels aren't located on the myelene sheeth but between them.

[@noone3708]

every part of my body feels weird