Real Engineer reacts to Technology in Dr. Stone #23

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[@mathiasnavarron3322]

there's one cellphone-The gold life, senku literally 2 min later:oh yeah we need to make another one btw

[@elipeveto7514]

I thought the same thing😂

[@kidaneechan]

I was about to mentions that 😂

[@sarahmellinger8125]

Nice

[@killumizoldyk6056]

Yeah he know that from the beginning, he didn't mention two because of labor migh break the villager spirit😂

[@1NIGHTMAREGAMER]

every one in the town was like fuck

[@doctor_b2802]

You missed the joke at the end where he subtly was like "ok let's do all that again"🤣 after Gen pointed out that you need two.

[@pedrosabino8751]

This is in episode 24

[@MrCool-lo3ls]

They kinda do have all the tools and enough materials now though, so it's just a matter of putting it together the same way. They *do* have a lot of wire, they *do* have tungsten (as stones), they *do* have a pretty good heating device and so on. They don't need to go out to find tungsten and they don't have to make many more chemicals. Also chrome and kaseki now know (kind of) how to build it, so the second phone is going to take way less time and effort. Think of it as the invention of the second wheel - it gives the first one a reason to exist, but you know what you're doing and what could go wrong this time around.

[@danielsausaman9767]

@@pedrosabino8751 ,incorrect this video is for Episode 23 just as the title saids , if think I lied see Funimation.com/shows/dr-stone/ .

[@pedrosabino8751]

@@danielsausaman9767 I was saying that the Ishigami village only realize that need 2 phones in ep 24.

[@indianasiddoway5715]

He eventually makes a land line, but they end up still calling it a cell phone. It's a translation thing, where the general word for cell phone in Japanese is also the word for phone. There is a separate word for cell phone but it's not often used.

[@parychahal]

ohhhh that makes sense

[@BidwellRunner]

I don't know about what word was used elsewhere, but at 7:57 they are literally using the word ケータイ = keetai = the specific word for cell phone that is not often used.

[@xahal]

@@BidwellRunner well, ケータイ comes from 携帯 which literally means "carrying". It's not often used ... anymore, because it implies old cellphones, as opposed to smartphones (スマホ).

[@Yotanido]

@@BidwellRunner Also, on the graph a couple episodes ago, it was 携帯電話 (keitai denwa), literally meaning mobile phone.

[@Yotanido]

Errrr, no. The usual word for mobile phones is either 携帯 (keitai) or スマホ (sumaho), with the latter specifically referring to smart phones. (It actually comes from the English "smart phone") The general word for phone is 電話 and it is very much used when referring to land line phones.

[@8644100]

he talks about the fact that he has to do another one, that he didn’t say so as not to discourage people, and that the flatearth's don’t hear that the lamp works sucking the darkness

[@le_me5410]

The thing i really like about this channels reviews is that he actually does abide by fair use, he doesnt just sit there blank faced for the length of the whole episode, not only does he affirm things in the show, he adds to it and just has the parts of the episode that matter, you sir, have earned yourself a subscription

[@briangohzhen]

Fair use or not I see no ads zzz

[@cantloze4717]

This anime has taught me 100x more than school has in 16 years

[@HusXX]

LOL so true. And the anime made it interesting too, unlike the boring education systems of schools

[@noimsquidward7327]

@@HusXX Not just interesting man, they made it entertaining as well.

[@korsaiyajinkami3766]

Missed opportunity to say "10 billion times" more, my dude. XD

[@MrCool-lo3ls]

Senku meant piezoelectric chrystals, which contract and expand when you apply a voltage to the and they give off a voltage when you apply pressure. They are also used in lighters to create the spark that ignites the gas (electro boom has made a video about making a microphone from a lighter).

[@soulstriker773]

When I saw this in the playlist I thought I could watch it now. 😭

[@parychahal]

Now I feel kinda bad for making this a premiere :(

[@vaniyarlagadda1277]

Me too hahahaha

[@samuelchau9745]

He then talks about how they have to make another one to make it work xd

[@me...2381]

Rochelle salt actually is like a piezo electric crystal. A form of crystal that gathers electricity by vibration or force.

[@pedrosabino8751]

Quartz, for example.

[@JM-us3fr]

I believe they are used in modern clocks

[@me...2381]

@@JM-us3fr yes, they do

[@marshmellowmoon7990]

@@pedrosabino8751 Well if we want to get into it, Quartz does reverse Piezoelectric as it turns electricity into vibrations instead of vibrations into electricity.

[@pedrosabino8751]

@@marshmellowmoon7990 But if we smash quartz with... a hammer(for example) it will not produce electricity?

[@scoobyjerdoo2867]

Love the doctor stone, it was a great gateway to your other content! I'll be sticking around for a while so keep the videos comin'!

[@parychahal]

Awesome, thank you!

[@shavono8402]

The microphone he's using is a piezoelectric mic, often used as contact mics, but with a big horn like they have, you can use it to pick up sound in the air as well.

[@DarthWolfen077]

It’s more like a military radio communication system than a cellphone but yeah they make it work for season 2 onwards

[@xahal]

you can say it: Walkie Talkie.

[@orukuroch.3355]

Movie actually

[@herculejoestar5809]

You are very literally the only channel like this I enjoy keep up the great work

[@parychahal]

Thanks, will do!

[@Eshwald]

Cool video dude and by the way the swimsuit from hell from episode 16 (I think) just motivated him to train harder. Also his VA who also voiced in HunterxHunter, full metal alchemist brotherhood,etc had died in April of this year.

[@maniasquid9715]

Seriously, God that's sad

[@genkyo6]

Whose voice actor died??

[@RebelTheArtGal]

@@genkyo6 Keiji Fujiwara, who also voiced Leorio from HxH and Hughes from FMA

[@KoyFoster]

Thanks for covering this series.

[@parychahal]

More to come!

[@CodeLied12]

Guys I'm back had no wifi last week and this week I was sick I missed 4 days of work I took a test for covid just to make sure but I do feel better now

[@parychahal]

Thats good! We missed you!

[@kolt5125]

Me watching this at midnight: ah yes , makes total sense

[@yugioht42]

Potassium sodium tartrate tetrahydrate, also known as Rochelle salt, is a double salt of tartaric acid was a major part of ww2 era electronics helping transmit sound better, it was also a laxative, used in mirror production, electroplating, aqueous workups to break up emulsions- particularly for reactions in which an aluminium-based hydride reagent was used. Sodium Potassium tartrate is also important in the food industry, measure protein concentrations, and Fehling's solution. It’s a pretty common piece of a lot of things that you have but don’t notice.

[@parallax4475]

Rochelle salt does the same thing which senku said . Search for peizo electric crystal online u will understand N Rochelle salt is potassium sodium tartarate also used in distinguishing between ketons n aldehydes It's used in feiling's test (feiling's B)

[@ifox3540]

I discovered this channel recently and it is really awesome

[@parychahal]

thank you!

[@merlinjim]

5:34 one major source of contamination is not actually that we are imperfect, its that processes like steam distillation are not binary. If I mix alcohol and water and I want to distill out the alcohol, as the mixture becomes more dilute, the boiling point rises slightly and the steam contains more water vapor. This process does have a tipping point where the steam goes from mostly alcohol to mostly water and the boiling point rises sharply - but the reality is that some miniscule amount of water is present in the steam at the very beginning of the process, and some alcohol remains in the solution no matter how much you boil it.

[@ClashBluelight]

senku seems to have made a radio. the first thing he made is a broadcast station, and after that he made a receiver and transceiver pack to transport. much more like a cb radio or a shortwave radio. i don't know anything about radios, but from google and wikipedia these seem the closest to senku's.

[@madonbarma2531]

This video is reminding me again of everything I learnt in college.... Nostalgia right there..... 🥺❤️❤️❤️

[@kevinolega1]

What is Rochelle salt used for? It is an ingredient of Fehling's solution. It is used in silvering mirrors. Crystals of Rochelle salt are easily grown and are used in piezoelectric devices, e.g., crystal microphones and phonograph pickup cartridges (see piezoelectric effect).

[@tehnoobestworld]

Humans have made one perfect lightbulb, a perfect vacuum with a perfect filament that’s been going for over 100 years

[@OminousSoul]

They will also eventually make a second Cell Phone, which is why, I think anyway, he had them make so much gold wire and Magnesium Batteries, so that a second one could be build fairly quickly, just need more plastic, another Vacuum Tube and then put it all together.

[@johnpaulturingan7175]

Rochelle salt, also called Sodium Potassium Tartrate Tetrahydrate, a crystalline solid having a large piezoelectric effect (electric charge induced on its surfaces by mechanical deformation due to pressure, twisting, or bending), making it useful in sensitive acoustical and vibrational devices.

[@Nagytika]

The rochelle salt uses the piezzo electricity (suprised that this is not part of your studies, here in hungary they teach it during elementary phisics). Bsically the due to mechanical force it produces electricity or if electricity is flowing through it it will make mechanical distortion(not visible for the naked eye) To make it simple. The vynil record player uses piezzoelectric crystals to convert the ridges into sound. Also some handheld lighter is making the little jolts with this.

[@jimmyorchid941]

*MAYURI:* *I HATE PERFECTION!!!* To be perfect is unable to improve any further.

[@JohnStormForge]

Rochelle Salts are piezoelectric like quartz meaning they turn mechanical or vibrational energy into electricity and vice versa. We use similar crystals in ultrasonic testing of welds and other materials.

[@Fan64Mario]

As far as I know Rochelle Salt is a salt from tartaric acid (as found in wine after fermentation) that has some piezo-electric properties.

[@milanhlavacek6730]

Dr stone inspired me to make a vacuum tube and i have to say its quite tricky.

[@silverhawk7386]

Rochelle salt or potassium sodium tartrate is an interesting chemical that is used to grow large single crystals, which are attractive and interesting, but also may be used as transducers in microphones and gramophone pickups. The chemical is used as a food additive to contribute a salty, cooling taste.

[@N3RD-13]

In laymen's terms senku's cell phone acts more like a and old fashioned switch board than full cell phone

[@seanfrancis4233]

From what I know (which isn't much) what your describing is a digital microphone, and what he's describing would be an analog microphone. The real advantages to a digital microphone are accuracy, and the ability to clean up excess noise through programming. An analog microphone like he's describing (again I don't know if he's using the right materials or whatever) would give you the same effect as a digital microphone, just without the ability to analyze the waveform or clean up any excess noise (or static) that might be transmitted. Basically he should be able to send a sound wave but has no ability to clean or filter what is being transmitted, which also gives him no ability to encode his transmission.

[@StormTrooperEX]

can't wait for more dr stone

[@shreeshasandur5120]

I don't exactly know if they are called Rochelle Salts or not ,but there are crystals which when subject to vibration convert that energy into electrical energy. These are called Piezoelectric materials

[@benjiboy1337]

For perfect purity of a substance, you would need to basically make a perfect vacuum and have Maxwell's Demon sort your substance one molecule at a time. Barring a molecular gate, any refinement process will asymptotically approach full purity, even ignoring imperfections in the apparatus, simply because the amount of effort necessary to remove a fixed percentage of impurity increases with each successive distillation. With the presence of air, you'll always have some degree of mixing and reacting taking place even if you managed an instantaneously pure substance.

[@matiaspereyra9392]

I've never heard of the salts either but those are basically piezoelectric crystals, I'd had to check my old notes but basically the crystal formation inside a piezoelectric crystal transforms mechanical stress into small currents that then you amplify it and send to a speaker (or more specifically the electromagnet that moves the thing that does the sound) Aside from crystals I've heard there are piezoelectric ceramics, although I don't know how good those are for mics

[@Forewarned76]

Rochelle Salts are Potassium Sodium Tartrate they were the first materials to exhibit piezoelectricity

[@TheFlameMCGames]

I learn more from his explanations than I do in school. Like why can’t teachers make explanations sound interesting

[@cubemage3336]

6:41 I think it's a similar mechanic to the usage of Quartz in watches. It vibrates based on the sound frequency and you can then transport that vibration in the form of electricity (I'm not quite sure either though)

[@arthurzuin7704]

More Dr. Stone pleeeeaaaassee

[@phantomthievesjoker7380]

Heyyy plss do the last one It will be worth to watch👍

[@parychahal]

will do!

[@AgRoseCrystal]

Senku called it a cellphone because his friend Taiju asked Senku to make a smart phone for him.

[@matheusheringer9569]

A little further on the episode, senku explain they need to build another one, but hide it until completion of the first just for keep the hype

[@lordalbert96]

I think that salt is just a piezoelectric material, essentially it converts strain to electricity and viceversa. I guess it could be that cause it can be precise enough to react to strain from sound waves

[@moltres42]

I think senku if he can, he is thinking about things that he can reuse later, I mean he can reuse the "broadcast towers" as you put it for more efficient cell phone designs...as it stands his current setup is the technological equivalent of something like walkie talkies and cup phones... with wireless capabilities

[@Alik_Odess]

The Rochelle Salt or Potassium Sodium Tartrate crystals are indeed have that unique property due to piezoelectric effect that they possess. Basically they are like a crappy weak microphone system (Imagine earbuds that have two big chunks of crystals hanging from them to get a decent volume.)

[@alexquest8113]

Rochelle salts are actually piezoelectric which means they can convert mechanical energy applied on them into electrical energy

[@monkweirdo]

I'm not familiar with the crystal either but converting sound (mechanical stress) into electric signal sounds like piezoelectricity. Piezoelectric crystals are great at converting extremely small forces into electrical signal. They are used at my university for example in atomic microscopes, where a single atom needlepoint is pressed towards a sample material and the mechanical stress applied by the atomic forces allow the device to map out the surface to a level where we can se individual atoms.

[@alainyddemmacutay6800]

nice review again sir! I can't wait for you too watch the final episode, please don't skip on the last part of the final episode. Anyway, stay golden sir!

[@parychahal]

Will do!

[@MrAvalon82]

Rochelle salt is a potassium-sodium tartratetetrahydrate (KNaC4H4O6•4H2O) and belongs to the family of uniaxial ferroelectrics.

[@souravdebnath5339]

Dude Rochelle's salt is just piezoelectric material. If u give pressure it will make electricity and vice versa. Same thing goes into oven lighter. The hammer strikes onto it and the material makes significant voltage to make a spark.

[@OminousSoul]

Just Googled Rochelle Salts and apparently they are real and are used as part of a Microphone and other receivers, though the vast majority of them look to be quite old that they could be considered vintage so maybe they aren't used in newer ones?

[@parychahal]

I'm not too well versed in the manufacturing and development of microphones lol It looks like Rochelle Salts are not essential, but add to the quality of the mics

[@MannyXVIII]

2:30 that misconception is the product of our perception. We cannot really tell the difference in brightness between 99 lightbulbs and 100 but we can very clearly see the difference from 0 to 1 lightbulb. A photo-seonsor doesn't have this "weighted perception". To a photo-sensor it doesn't make a difference how many lights are already on. It can detect and measure both just as good.

[@1sdani]

Platypi also glow teal under UV light, a fact that was discovered years after Phineas and Ferb depicted a teal platypus.

[@parychahal]

I did not know that, but that's awesome!!

[@jaqhass]

Take an empty tin can, a bit of wire and attach the crystal/wire to the can with a magnet and you can technicly produce audio. A lot more compex than that but still possible.

[@MISTERALPHAX]

I don't know if you will read this. But in Japan their are some word in the English language japan can't pronounce or don't have a word for. Mostly all foreign country will not have a word for a specific word in the English language. It was easy to put cellphone cause it was the easiest way to describe what they are doing.

[@parychahal]

I did read this! And I agree!

[@oscarpine7145]

!SPOILER! In the arc after the war, island arc, senku makes exactly what you described. a one way transmission device that let's you hear commands but you cant talk back. he even makes it the size of an earring

[@sofiadragon6520]

I don't read the manga, but I'm going to guess it will be like an old style switchboard at the main tower. Different remote phones, which look like they will be pretty huge, will communicate with the tower where, just like in the old days, a person will make the connection manually instead of using a processor like we do today.

[@edale2]

Yea, I'd call it more of a ham radio than a cellphone.

[@lessthan1446]

More dr. Stone

[@awilliams1701]

I was calling it a giant walkie talkie. Not exactly portable. I'm wondering how they intend to use it since it isn't exactly portable once they have the 2nd one. Also I haven't heard of the salts either, but I am familiar with the concept of piezo electric. I figured it was just another name for those types of crystals.

[@siamangape8853]

more dr stone please(:

[@Erdyn94]

Hey man, was just wondering if you would ever consider reacting to fullmetal alchemist brotherhood, I'd love to get your take on the different scientific principles presented throughout it. Also, I am 10,000,000,000% digging these videos!!

[@parychahal]

I'll put it on the list! Thanks for the love bro!

[@_err0r_error_]

you should watch a certain scientific railgun there is a lot of science in the show that i think would be interesting for you to check out

[@servindothings]

the story itself is good but they romanticizes the general concepts too much that it is not good to break it down scientifically (like controlling vectors, friction, etc.)

[@npcask2848]

Piezoelectric Microphones, also called "Crystal Microphones", that use Crystal for that~~

[@MidoriRyujin]

Oops, was about to comment some corrections. but I just checked the 23rd episode and Kohaku's question wasn't there xd. I'm excited for the last episode! LAST ONE!

[@TGHibiki]

Yeah he made a radio. But I think the kids who watch don’t know a radio or walkie talkie are.

[@mrbomberholmes257]

Imperfect=imperfect and that's ok. The race to 100%

[@l33tninja1]

I think they called it a cell phone instead of a radio since alot of younger poeple can associate with it better.

[@stockbrotsalat7577]

0:56 About that, is there any way to calculate or kinda tell without testing it how strong a substance will react to uv light, and is there a list sorted by strongness?

[@parychahal]

The more photoreactive a substance is, the more receptive it is to UV light influence

[@TWHowl]

1:08 When the Alzheimer’s kicks in

[@xiaverlucio8192]

More dr stone

[@rafibausk7071]

I'd refer to what he has made as a Ham Radio.

[@aidanmullard8508]

He ends up with two big backpacks that transmits to each other

[@SushiCat0316]

6:18 you can find them in most battery powered lighter... yes they can absorb sound... as i remember there is a mad engineer here in youtube that really loves to electrocute himself, i think he can help you explain it even further...

[@OverseerMoti]

ElectroBOOM dude, yeah.

[@UkiKhoo]

Actually the Rochelle salt i'ts a piezoelectric material, so theoretically it stores mechanical energy that can be released somehow Also Hercule Joestar won me commenting soo0o0o0o0 (?

[@lukusakazadi-christian8526]

5:19 And that's why we don't have Pure Crystals.... :(

[@watergod321]

Much like a switch board operator

[@otakuchan3173]

more dr stone

[@rolandjaycutter3504]

Lets be honest, its a radio.

[@Hotdawg54]

you should do full metal alchemist and brotherhood

[@madestmadhatter]

Yeah no, he just built a two way radio, but he wanted to throw some flare on it... For no one but himself.

[@stockbrotsalat7577]

2:46 If I'm right, it could also be debunked by the energy the light-bulb consumes and how much it should consume if it lost such a big energie-consumer.

[@realdragon]

I suspect that salt works like Piezo crystals, applying force (squishing it) generates potential difference on both sides since anions and cations have special structure. It also works the other way around, applying voltage squishes crystal. It is used in electric lighter and it's possible to make cheap ass microphone/speaker from it. Here's the image external-content.duckduckgo.com/iu/?u=https%3A%2F%2Ftaobabe.files.wordpress.com%2F2012%2F11%2Fradioactivity-piezoelectric_effect.jpg%3Fw%3D891%26h%3D540&f=1&nofb=1

[@richardlee8899]

Please react to assumptions after you finish watching the whole series, especially how this series is structured- concepts are explained as episodes pass.

[@admiralcasperr]

Senku didn't mentio the secend phone cuz he needed the morale up.

[@KyuTyler]

Been enjoying this series but getting 6 ads in under four minutes is... something else

[@BidwellRunner]

"that theory did not account for the heat produced by the light bulb", ahh you mean the cold that the light bulb sucked out from the environment along with the darkness?

[@apgamer4053]

i was gona put this on the last ep but because your talking about chemical purity here ima put this question here "chemistry is a exact science"(rather calculations try to be as close to perfect as we can get them) where is senkus scale and how did he calibrate it for measuring the only thing i can think of is hes going off there volume but even that he would have to eyeball the man did count seconds for 3700 years mabby he can tell the exact amount of grams in his beakers by picking them up XD give it a min he needs another XD 8:38

[@pulguinha682]

Well, fluorescence can happen under UV light, X-rays and cathode rays, just to name a few

[@danielmark6858]

After Dr. Stone hope you'll watch Steins Gate

[@osielmendoza5214]

Check out “Are you lost” pretty good anime but I’m not so sure about it

[@WimiBussard]

It might be more interesting for a survivalist watching this.

[@parychahal]

we all just trying to survive lol

[@Nionivek]

There are calculations scientists make that assume things like incomplete synthesis and impurities... But for the life of me I don't know what those are. . Or rather there are scientific calculations out there that aren't "Perfect world calculations".

[@Teeooss]

Rochelle Salt is potassium sodium tartrate tetrahydrate.

[@direstorm7324]

Dark sucker theory? I’m giving this to the flat earthers who also believe the sun shines hot and the moon shines cold.

[@herculejoestar5809]

I live in AZ and literally said scorpions one second before you

[@parychahal]

We don't have any scorpions in Michigan lol I was so upset when I came to Scottsdale and went on hikes and didn't see any of them! Saw a few road runners tho

[@herculejoestar5809]

@@parychahal We definitely have some great places to hike and the wildlife is amazing. I'm not surprised you did not see any scorpions I've only seen a small handful myself and that's because my friends apartment complex was infested with them durring monsoon season several years back.

[@parychahal]

a scorpion infestation sounds like the stuff of nightmares

[@herculejoestar5809]

@@parychahal It really is no joke it's like roaches if see one their are about 1000 living in your walls.