Electric Charge: Crash Course Physics #25
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- Опубликовано: 28 сен 2016
- Moving on to our unit on the Physics of Electricity, it's time to talk about charge. What is charge? Is there a positive and negative charge? What do those things mean? In this episode, Shini talks about electrostatic forces, electrical charge, Coulomb's law, and the force between charged particles.
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We made quiz questions to help you review the content in this episode! Find them on the free Crash Course App!
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Download it here for Android Devices: bit.ly/3TW06aP
Does the sound dim at random points for anyone else? It's like someone muffled the mic arbitrarily.
Mekryd As soon as I read this it happened
Yeah, it happened
Yep
Mekryd I think it’s because you are receiving messages
I thought I got some notification on my phone
When your physics teacher doesn't teach you physics so you rely on the internet
sad but true.
relatable
agreed
Lol that's me 😂😂
But im here because I dont even have a teacher
She has a lot of potential to become a rapper
AdjacentTie Why is it because her hair can be turned into a rapper?
i think bartu is saying that because she talked fast
you guys are dumb lmao its cause she talks fast jesus
OMG RACIST
guys its not she is talking fast!!!they have edited the video to fast mode....
When you try the tape thing and feel like a scientist.
These videos are saving physics students lives' every single day
she makes 10000 times more sense than my professor, who didnt explain anything and just started writing equations on the board.
exactly what my professors do all the time.
I feel you
bekar sir ha
I'm feeling also feeling the same way!
Stop this god damned meme.
Just some timestamps to help the future me rewatch this video :)
0:00 - Intro
1:18 - Electrical charge
3:09 - Law of Conservation
5:40 - Charge (q) & Coulomb’s law
7:30 - attraction & repulsion between charges
"giving the amber an overall POSTIVE CHARGE"
also amber: *sad face
.
I want to tell her it's okay to take a second to breath!
3:03 why am I dying at the animation at the bottom lmao
same 😂. maybe its the slap? 😂
I want a "Crash Course - Physics History", telling us about how all everything was discovered.
nerd
@Ricardo I support this!
YES PLEASE! :3
Neil Tysons Netflix series cosmos does very well with that, but only with a few
apple fell on isaac newtons head the end
This is a better explanation than I've heard in any college physics/engineering course. Thanks.
for some reason it made me sad when the fur stole the electron from the amber
same.... mean fur....
Me same
3:01 I became anti-fur
Hahaha 😂 I'm so sorry I'm laughing so hard
poor amber D:
Electronic engineer here…You just explained static electricity better than all my teachers in university. The topic can be very confusing for beginners. This course gets better every time!
Everything is a conductor when there is high enough potential.
Also what are the odds of getting a mini crash course series on electricity alone? There is so much content, from basic theory, AC vs DC, current, motors / generators, different kinds of load on a circuit, different electrical components ect.
+Matt T
Or if you just make it hot enough (e.g. glass becomes an excellent conductor, when heating to its melting point)
yep I'm failing physics class
Did you fail
@@dome6356 good question
but did you fail tho?
Eduardo Freitas I wish they would have let the guy do this series, she’s so bland and reading off the board and the sound quality is muffled at points. This sucks 😭
I love how Crash Course videos explain a weeks of physics lectures in under 10 minutes in a way that we can understand. Thank you!
When your "teacher" teaches you for three classes and you have the unit test next class
When your first name isn’t isawkonlong 😓
This would be a great introduction for a Crash Course Electronics series. I really think you guys do a great job explaining complicated things, simply.
these crash courses have teached me complex and extensive subjects in a matter of days, waaay better than even college teachers
your channel doing a math course would be such fun! I love learning through this videos because everything sounds easy and the people giving the course looks so happy while filming! everything about this makes you want to learn more and more!
That poor lil Copper just wanted his Electron buddy back.
this is the best comment in this thread
*Amber
LPSwimmer2011 Why would Amber be conducting electricity?
Andrew Swart Why would fur?
Andrew Swart It wasn't even conducting electricity.. it was neutral
That was a pretty cool animation with her fingers repelling the electrons.
Letme me just say.. The intro music is 🎶🎶🎶🎶❤️🎶❤️🎶❤️🎶❤️🎶❤️❤️Epic... ... Tututu tuu Tututu tuuu 🚉
I AM FOREVER GRATEFUL TO THIS CHANNEL FOR CLEARING ALL MY DOUBTS
I found that quite difficult to follow but her calm and joyful way of explaining things helps a lot!!
A good physic teacher can make you fall in love with physics and she did it like a pro.
that would be awesome to have crash course history for each equation popping on the screen. Just to know how these equations had been found and all, not just accepting that this is reality and has always been
3:02 omg that fur is so mean! 😔
When we're saying that a piece of fur is mean
What has my life come to.
@@Lyynity it's ok.. that was two years ago. Humans can't tell left from right these days 😖
Yeah
Anti-fur movement arises
I am at a cafe watching this with headphones on and at 2:32, a bunch of people walked in behind me.... fml
Lol ikr watching this in class and people see that XD
I want her to polarize my rod. I'd definitely give her some of my free electrons.
Good sense of humour
+yoyoclockEbay dude WTF...... xD
@@yoyoclockEbay Same
i want tape now
3:56-4:00 and 7:57-8:00. The audio becomes quiet for a few seconds.
I thought it was just me
+
Its probably editing problem
Wth ...you can still listen......then what's your problem mofos
who cares
Randomly selected this video and found out that it is the same thing I learned today in Physics Class! And btw the video was fantastic!!
Surely my parents didn’t know what grounding meant
Lol😂
Dude, these videos are what's getting me through IB Physics right now
Just amazing. I just understood electric charge that my professor was trying to teach us in 2 hours and a half
I did the tape thing and it really worked, blew my mind. So cool. She should do labs to...... I rarely see the point behind labs.
i remember watching the walter lewin explanation and she basically did it in 9 minutes. simply amazing
Really well explained, continue making this vids, they are geniunily awesome!
Hahaha I have a test on this exact topic tomorrow and I forgot to bring home my physics book, thank you crashcourse you beauty
Coming back to it, an excellent amount of information in such a short time frame. Absolutely excellent!
Something about this video is very special. I learned a few things too. Great work!
So glad you started Electromagnetism! Beautiful video.
This was the most interesting video in the physics course so far. 👍
Your videos are very helpful, I always look for a video on your channel first if there is something I don't really understand during a lecture. However, I would really appreciate it if you slowed down a little. Thank you. ☺️🌼
Thank you very much for giving valuable information on Electric charge and Column's law.
I really want to thank you! I can't understand my teacher at all, and this made so much sense :)
Thanks a lot Crash Course!
I was waiting for this topic of electricity to come along..
This is such a productive and educational video thank you.
impressive delivery. Great content. great graphics. I subscribed. Good Job!
The animations are adorable. I thought it was cute how the fur slapped the amber lol
omg thank you - I was waiting for this one!!
Excellent video, thank you!
I was doing homework on this 20'minutes ago for physics 30, and then this popped up in my subscription box. Best timing ever I guess.
These videos are SO HELPFUL!!!!! :)
Thank you so much. This is an awesome way of explaining it! :)
Thank you for posting this! I’m thankful for the internet
From ~3:58: If I know well, electric polarization is a shift of positive and negative electric charge in opposite directions within an insulator, or dielectric, and it occurs when an electric field distorts the electron cloud around positive atomic nuclei, so with metal you get maybe charge sharing (I don't know the english name of it) but not polarization...
I have an exam coming up on some of this stuff soon, and thank you!
Thanks a lot for this video. Good subject!
when taking high school physics. this was my favorite subject.
7:58 volume change scared me to death
This video explained this better than my Physics teacher. Thanks!
It is easy to understand and you could learn about the positive and negative charges ,charges of the same sign repel each other, while charges of a different sign attract each other; that is, the electrostatic forces between charges of the same sign
Come on Crash Course! I needed these a month ago!
Amazing explanation, 100 times better than anyone else!😍
I think a more forward definition of static electricity is a difference in charge without a carrier. Two distinct systems (clouds and the wet ground) with a high resistance barrier (air).
Thank u very much for this video!! It helped alot !!
I'm supposed to be reading my chem book for calorimetry and I'm watching this boiiiiiii
thank you you help me so much and you explain it better than my teacher
really wanted to complete this crash course physics playlist, but on every video halfway through I get sleepy lol her voice is soothing it makes me want to snooze off
at 4 mins in audio gets low
also at 7:58
cus shes moving away from the mic to peek at her cheat sheet
yeah, but it is so easy to fix.... i think the editor doesnt like us
Jennifer Li n not mn mn. N Nh. No m mn n. N. M n m hmn. Meme. C ,d. Cld. Do d.
Scseurcnjcdjndjskaksjcsjxnxncvbfeucncncisicncncnssisisisisisiissicnncccnncisisisisisiaoaoaoaoaoaoaoxjxjxjxjxxjxxnxxpornhu djdjxjxjxx x x xx. S x x x x x x. S x x x x x xx x x x x x x. X. Xjaajaajsjja
actually the mic is on her so even if she was looking at her cheat sheet it wouldnt matter because the volume would be the same
great work , thank you
Thanks Crash Course! :)
She forgot the mention that the greek word for amber is electra. That would have been a crucial and memorable piece of info.
Question she said at 2:53 weather the the rod turns out positive or negative charge depends on the Material how does the material depend on that .
I'm learning well. Please continue to educate me
Could you put a contents in the description, with links to where they are covered in the video? btw you da best shini, so cool
I think there's a mistake when the coulomb's is being tested, it shows that the K = 9*10^-9 but it should be k = 9*10^9. I am right?
Hope this helps. Amazing video and explanation. Thank you.
0:50 what makes one tape more negative than the other? What determines which tape gets the extra electrons and which tape gets oxidized?
I'm doing a science electricity test tommorow! I use your videos to study.
love u Dr. Shini
this is pretty good learned a lot form good video!
always informative
super duper loved it
REALLY LOVE THE WAY YOU DESCRIBE MAM.
Right now I'm waiting for the electric fields episdoe to be uploaded!
thank you Crash courses team for all your efforts. please consider that not all the people watching videos on a specific topic are professionals in that field. I think that most of the people watching the videos on physics, for example, are from other back ground who are keen to expand their knowledge in physics. Also, do not forget that there are many people that are watching your videos do not speak english as their first language, despite the fact that they may completed a PhD degree in their speciality in a country which use english as first language i.e. their english is quite good. Therefore, please speak at slower pace so we can understand you from language and scientific perspetives. Sometimes I can easily notice that the presenters in your channel can not catch their breath.
For "charged by contact" and polarization, I thought that if an electron was already "linked" to a proton it wouldn't be drawn to anything else.. The electrons go towards the area with more protons because the bigger positive charge breaks that attraction it had with that sole proton it was originally linked to? Great video though I would have liked to have it all explain from this point as it becomes even more fascinating.
I play this video over and over
Very much helpful video
Blue balling for the next episode right now!!!!!!!!!!!!!!!!!!!!
thanks, Crash Course you are the best always
I believe there is a mistake at 6:09; the number of electrons per coulomb of charge is 6.25*10^18. But I find these videos very interesting, thank you.
I love crash course. they are lifesaver.
Thanks, for helping me understand.
At 3:25, why does the contact between the positive and the neutral rod transfers electrons? Aren't they glass rods, and thus, insulators?
And if there is a reason for electrons to flow that way, why don't they travel through me and get "grounded", thus, neutralizing the charges?
That tape thing just blew my freaking mind 😳
The division by a square represents the lines of force as though they were taken as an integrated surface a particular distance from the centre of their emission, that is to say, the surface of an imaginary sphere. All equations where the strength of a force between two particles can be visualised in this way, and the strength of the force is the reciprocal of the distance between them. I wish someone had told me that in school