Intro to Capacitors | Doc Physics

Super useful things, capacitors. I hope they will be used to run cars within the next twenty years. That's your job, students.

[@m35926]

I love teachers who enjoy teaching. Makes learning easier and much more fun.

[@anantshukla9186]

Agree! :)

[@Mike-hv9vf]

Anant Shukla disagreeable

[@michellec.4291]

I wish my professor was as enthusiastic about teaching physics as you are then maybe the whole class wouldn't fall asleep. I'm discovering how awesome physics really is! thank you

[@OK-ri8eu]

this was made back in 2013 wow. I liked how he explained every "Formula" and not just write them down without explaining. Thanks for this very efficient 10 minutes

[@DocSchuster]

That's just from an old radio, man. The black pulley on the side had a string around it that moved the tuning indicator. Three cheers for manufacturing ingenuity!

[@felixgonzales9786]

i learned more from this 10min video than my 3hr physics course thanks

[@hihikasu]

Thx, dude. That is super clear, enjoy your teaching!

[@sidereal6296]

You are incredibly informative and entertaining. Great videos!

[@hasmahjani3475]

Personally, I likes your video. It's easy to understand and yet you are so funny. Keep it up Doc! =)

[@SchUlrich]

kinda Deadpool teaching physics

[@Mike-hv9vf]

The Magnificent Conqueror ur wrong

[@misterfilthy1]

I happened to read this comment as I started to watch the video, and couldn't stop laughing through the rest of it, picturing Deadpool the whole time.

[@mohajeramir]

Great Job. Thank you for all your videos.

[@shivanisathaye4168]

Thank you for explaining the topic so well...... You are a great teacher..... Love the way you add a bit of humor in you lectures 👏👏😁😁

[@Mike-hv9vf]

Shivani Sathaye I don’t like u

[@Popart-xh2fd]

The problem is that water is used as analogy to electricity instead of gas, because water is practically incompressible contrary to gas. A capacitor should bee seen as a gas cylinder instead of a bucket. This way you may do a better analogy, like this: V = Gas pressure; Q = Gas quantity; C = Capacity of Gas storage for a given pressure, and so Q/V. Like a gas cylinder, greater pressure (V) means that greater quantity (Q) may be stored, however, if you increase V (gas pressure) too much, it blows up, so, besides C a capacitor has also defined the maximum pressure V it can handle before it blows up... This is why you should think in electricity as Gas flow instead of Water flow.

[@DocSchuster]

+Popart 2015 That's really beautiful. Thank you.

[@Popart-xh2fd]

Thanks, and the mysterious formula with the neper number e has to due with the "Exponential Decay" of the charging/discharging of the capacitor, where 63%=(1-e^(-1)) for t=RC.

[@simonmasters3295]

It really is!

[@DijyowLee]

Capacitors are SHOCKINGLY useful. saw what you did there

[@bullseye99o]

really, your videos are fun to watch and are very good.

[@DocSchuster]

Thank you! I'm happy to help.

[@janna2021]

Thank you from the year 2020

[@shakesrear7850]

Okay so I gotta find out what charge density & epselon & edge effect are (pretty sure I don't need to know all of this to be an electrician but love the knowledge). Yet another great sesh. Love your teaching. Please keep it up.

[@DocSchuster]

Great attitude. Don't let anyone tell you not to learn something because they don't think you'll need it. Understanding must be more than just a tool in our lives!

[@DocSchuster]

Woot capacity.

[@L3thalShad0ws7]

Bustin a cap! haha man you're awesome

[@Mike-hv9vf]

Chey McRey I busted a nut xoxo

[@yazazan]

The area in the equation - C = (Epslon*A)/d - is the area of overlapping of the plates, correct?

[@leakybucket2898]

You teach awesome !! And you really don't have to change color for + and - ..:D

[@hanohbl9341]

het great stuff but what happens to V if you turn the battery off? does it remain the same?

[@naderhumood1199]

I like your apprauch Sir... thank you for the vedoioooooo...

[@OSILVEROBULLETO]

The OG slang: bustin' a cap!

[@picklejuicedan1346]

I want to know of there is a certain class to take in order to learn this type of stuff I really am interested in this type of stuff but I don't know where to start to be more familiar with this subject.

[@ethank123]

Heat Capacity=C

[@twinkyjoseph3679]

Nice teaching

[@vishaldvg]

Love your Teaching.....By the way Does 'C' stand for the speed of light??

[@DocSchuster]

vishaldvg Thanks! I use lowercase c for the speed of light, yes.

[@rorymackinnon6133]

Do you trip acid? you have godly understanding... I maybe crazy, but I'm watching this video rn on acid, and I've either opened my third eye or I've seen god's matrix

[@phenomenalphysics3548]

Why would we need capacitors if you can let the current flow through the wire itself?

[@dpyp]

variable that can't change : arbitrary?

[@dantox7692]

I'm almost sure he is talking about Carnot, such as refrigerators and air conditioners etc.

[@DocSchuster]

Dan Tox Those equations sure are similar, aren't they. Efficiency of charge storage also has a lot in common conceptually with heat capacity. A capacitor is like a geometrically configurable energy-storage fluid! Cool stuff.

[@dantox7692]

Very cool stuff indeed, great lectures!

[@kabirkhanna7845]

Only variable that can't change? Isn't that not a variable but a constant in that case?

[@DocSchuster]

+Jk Khanna Well, yes. But I like to call it "a variable that's held constant" and reserve the word constant for aspects of nature that never change. Like the speed of light in a vacuum or Boltzmann's constant.

[@dylanneal8131]

HEAT CAPACITY

[@sadneer]

The "C" in the video is heat capacity i thnk..

[@NovaWarrior77]

NICE!!!

[@UrinatingTheCrowd]

your voice sounds like jeremy piven

[@rohitsanjay1]

what does C represent?!?!

[@kapoioskapoiou8631]

Great math only if we want to build our own capacitor YOU WILL NEVER USE THEM.

[@rorymackinnon6133]

I wesh I knew you when I wan is school

[@vishaldvg]

i mean other than capacitance...

[@prateekgurjar1651]

capacitors dont actualliiee complete the circuit right ?

[@DocSchuster]

Right. But they seem to, at least initially.

[@kylepratt1217]

capacitors can complete the circuit; that's the basis of all discharge. it's what makes a tesla coil work

[@WavesOfLight4]

c=heat capacity!

[@DocSchuster]

Addie A WE NEED MORE LETTERS! I bet physics is really easy in Japanese.

[@WavesOfLight4]

Doc Schuster haha so many physics concepts, and only 26 letters, tisk tisk. Physicists could make up some new letters, I'm pretty sure the world would be down. haha

[@Rose1997011]

C- speed of light and im 2 years late

[@therelated1536]

Its heat capacity my g

[@adeeb1787]

Yes, its heat capacity, which relates the heat with the temperature same as capacitance relates voltage with charge. Oh, I am 4 years late and 2 years late to your comment.

[@adeeb1787]

But it can also be speed of light

[@mediocremedico2421]

Hah Pakistani student 👨‍🎓

[@jeanious2009]

They will be used in the near future for cell phones...imagine being able to charge up your dead cell or electronics in less than 5 seconds and BOOM fully charged and ready to go. Same goes to electric cars.

[@DocSchuster]

These are wonderful days in which to live!

[@TerryLangTechnicalConsulting]

Doc Schuster Hey Doc, Cool M.O.! (cop talk) With the mass produced base engineering and product is supplied to him/her, I'm thinking the average idiot would/could turn his/her car into a WMD or his/her cell phone into a "Tazer"... ouch. : # Can these devices be tamper proofed or safeguarded from stupid ? I am what "they" call a multi craft maintenance engineering technician. I really like the long title, but really it's like an underpaid / under educated engineer that likes to get greasy and shocked fixing the weak links in operating systems a real engineer designed. I hope this question may prove me to be an above average idiot. : /

[@DocSchuster]

You seem really fun! They're a saying where I'm from, though: Hackers gonna hack. You get to protect the average sloppy American from innocently using something in a dangerous way? Your field has come a long way. I've worked with some old electronics and appliances and been shocked (get it?) at how dangerous they are.

[@TerryLangTechnicalConsulting]

Yeah, me too. I rationalized it, that, I was exploring my potential. dzzzzzzzzaaap ! This could be why my hair looks that way in my stunning profile pic. Whats great is,in the U.S., we have to have somebody else mark our coffee cups, as being hot. This proves that not all of us have the uh...shall I say , critical thinking skills needed to convert capacitance into an ouchy.

[@chriswesley594]

You're a very engaging speaker, but capacitance has nothing to do with charge-storing efficiency. "Efficiency" is entirely the wrong word; in science, it means the ratio of useful to total energy expended. An engine is EFFICENT if most of the energy it uses is expended usefully (in turning the shaft). The concept is not applicable here, and is very misleading.

[@Wayne-fe1ed]

Go look at someone else for intro to capacitors? If this is not an intro then why call it an intro...

[@DocSchuster]

That's an excellent point. I should make an intro video and change the name of this one.

[@sadneer]

The "C" in the video is heat capacity i thnk..