We made quiz questions to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: apple.co/3d4eyZo Download it here for Android Devices: bit.ly/3TW06aP
Just a shout-out to anyone confused by this episode -- I am an electronic engineer by trade, and watching this video even I was bouncing between "that's technically true but so far removed from my day-to-day" to "wtf?". So if you found this confusing, do not be discouraged -- there are a wide variety of ways of teaching and understanding electronics, some of which may be more suited to your way of thinking. Do not give up!
TheHue's SciTech That's because she is teaching physics, not electronics. You are correct that electrical engineers rarely, while they are working with electronic devices, worry themselves much over the details of the physics. The reason is that most electronic devices can be considered in an abstract way, without worrying about the physics, and electronics is difficult enough without having to constantly concern oneself with the details of the physics. If an EE had to worry about the physics of charge carrier diffusion every time she put a transistor in a circuit, this Ipad I'm using would never have got built!
Mark Holm Absolutely correct, and I still feel my message is justified because I'm seeing "I will never be an engineer" messages in these comments, which I think isn't right.
this is really helpful for someone that has studied this subject from a book before, like it shows the examples very clear. I dont recommend learning directly from this video, you have to have a previous knowledge
I don't get why everyone is complaining!!!! These videos are helping me pass physics!!!! Without them, I would've failed. It is a "crash course" so of course it is going be quick! It is meant for those who don't have time to watch a 1-hour long video. If these videos are not helping you then you could check other videos. I personally love this series and I am going to recommend it to my other fellow science students who don't know how to study a week before the exam and need to cram the last second :') I can't express how much I love this series, really... Thank you Crash Course and PBS Studios!!! Thank you Dr Somara!!!! I owe my career to ya'll
I really hope CC Physics gets to 50+ episodes, it really is a massive subject and covering all aspects of physics properly will take more vids in this playlist than I think any other subject would.
Will you guys also include Nuclear Physics such as Gamma Radiation and Fusion? I am going to have my public exam next year summer and I hope you can cover that as well.
I swear. Capacitors get me every time. I've seen 26 episodes of this with no issues. As soon as the episode I want comes along, I just become lost in the matrix. Capacitors just absolutely destroy my brain for some reason.
Ok... so I am a senior computer engineering student who watches this series to refresh myself on the basics and I got lost at around 3 minutes. I know the material, but following this video actually started to confuse me. I am not 100% what the solution may be, but a slower more verbose explanation maybe helpful.
These videos are terrible. I'm an ME, and i barely understood anything in this video, even though i consider myself very good with electric circuit, and have designed several costum PCB's both digital and analog in nature...
IKR 😂, I’m a high schl student too and these vids are actually extremely useful. Tbh I don’t get how uni level and grad students can’t understand them??
that's a real good episode. And for everyone saying it is to fast, try to pause between informations, take your notes and continue. After ending the video do yourself a test about what you learned and watch again, comparing what you gained with what's shown. Learning all those subjects takes a lot more than ten minutes.
I have to pause every now and then to understand the important concepts she's teaching, to let it really sink in, or I'd be really confused, still Crash course is so darn awesome. I wanna see more.
This is definitely the most difficult Crash Course to follow so far - my "CCPhysics" notebook is practically unintelligible - but that just means I need to focus more... and maybe purchase "Physics for Dummies" as a supplementary learning tool like I did with the Anatomy & Physiology course.
I read our physics textbook and was able to follow this video. Thanks for helping me catch up on the lessons from when I was absent. Contrary to what the others say, this video taught electric potential in a straightforward, concise manner. I guess it would help to make the videos longer and elaborate further. For example, you could connect electric potential and charge with height and mass in gravitational potential energy. Still, great job on distilling this complicated topic. These videos help me achieve my goal of taking a physics course in college. :)
I don’t care about likes. And if you didn’t care either then why are you interrogating me saying that is the only this I care about, and I do this for likes. But what if did, what different would it make me? There are numerous other people saying comments for likes, fun, or because why not. Just because they comment something that looks like fishing for likes doesn’t mean that they have no life or self esteem. It’s just for fun. And if you care so much on how you think I fish for likes and have no life, but why even bring it up. WHO CARES? Even if they know that the person is fishing for likes then why bring it up, to make you feel good. Why are you even bringing this up? For what good comes out of this apart from exposing someone pointlessly. Just to try to point and try to put a stereotype on everyone else. UA-cam is for fun entertainment and learning. No body cares about likes. They are meaningless. And if you care enough about this to point this out for no apparent reason then your own benefit. Then why did you do this? Why did you add this in.
Thank you sooo much, I'm preparing for my physics exam and you explained everything in a simple manner. My textbook cannot compare. P.S. To the people saying she needs to slow down, pause the video or change the playback speed.
What people here have to understand is that physics is HARD. You can only dumb it down so much before it becomes too "dishonest" from what science predicts in the real world. As someone who is curious and really want to learn, what you have to do is to do active watching: pause the video to process what was just said or try and understand the equation that just popped up, rewind the last few seconds to rehear what she just said, and watch it over and over again a few days apart to really grasp the implications of the physics underneath. There is no miracle solution, science is very complex but we can't change physics in the universe to make it simpler, and that's the only way we can understand how our world work. Be patient with yourself! There is not a single scientist that learned any field of physics by simply reading it for the first time. I'm an electrical engineer and I still watch those videos to strengthen my basics! So don't give up, this channel is a good tool to learn, but you really have to put effort yourself as well to learn. And trust me, if you can manage to do that, you'll be able to apply this skill everywhere in life and nothing will seem too hard for you to understand :)
She could elaborate. She could say let me put this in lay man's terms. She could say I can see how this might be a stumbling block for you so let me help you get over that hurdle. She is in plain terms a brilliant parrot but a lousy teacher.
Read the chapter from your book first, try a practice exercise or two, come back and you will find the pace fine. This is crash course, if you want a full work through of the ideas look up Walter Lewins lectures from MIT opencourseware, they are thorough.
I watch your videos from time to time and I like how you explain difficult concepts without a landslide of maths , if I want my brain to be smashed to pieces by maths I can watch a Lenard Susskin M theory lecture . People like me want to learn the concepts more than the maths .
Stuart Williams She told you, a capacitor is two parallel conductive plates with an electric charge between them, ie positive on one side and negative on the other. Later she added the interesting and practical fact that insulating materials between the plates can reduce the electric field between the plates allowing more charge to be put on the plates for a given voltage. Real world capacitors sometimes are exactly parallel metal plates, but very often, the plates are contained inside a package so that you can't see them.
Stuart Williams The most common use of capacitors by far is in circuits where the charge on the plates, thus the energy stored in them, is rapidly varying. They rapidly exchange energy with other components and that makes a huge range of electronic devices, from radios to computers, possible.
Its important to read the material and use these videos as review only. If this is your first exposure to the material, you will have a terrible time. Go back, read the chapter, complete practice exercises, and then return to find that this is a really awesome video very efficient at making these concepts concrete.
I understand that these videos are fast paced and that they are overall covering very challenging concepts quickly, however I find that pausing the video and intermittently taking notes is incredibly effective, for context I am a senior high school student. The pacing is fast, yet I feel we should be thankful for any free to access digital learning material, albeit with flaws.
Alan Gaul The equation given in the video uses Q, not C. When Q, the charge is used, the equation given in the video is correct. Converting between the two versions of the equation is trivial. Try it.
If I didn't already understand all of this, I'd have no chance of learning it at this pace. The other crash courses seem more approachable even though this is my field.
4:45 so, juice up a coil, put a ball bearing next to it, and rub with a ground line. boom. insta magnetic cannon. got it. _turns around and starts tinkering_
I really love the crash course series and i really like this host a lot. My only issue is I guess this series is not for a noob like me and more for the Physics student because as soon as she starts on the equations, I'm lost :)
hi Hank, i love this channel! can you guys consider doing a CrashCourse on Environment Science, how global-warming occurs, climate change, inter governmental panel on climate change bio and non-biodegradable waste, population growth over the years, environmental impacts etc...that would be awesome!
When you're going along with the video but then you get too many equations and you ask yourself "What am I watching again? sounds like noise at this point" 10/10 too complicated for me.
Thank God the Videos of crash course are always on UA-cam..... Man I freaking love physics........... And crash course in itself.... But please can't you start another Session of physics...... I Wanna know moreeee
thx for another awesomely ha bisky physics lesson i was cleaning while i was listening to it but i think i understood it as much as i would have if i watched it
I like the formula at minute 8:16 because it tells us that bringing the plates closer together is the best way to store more energy. It growths exponentially. Let's say K*E0*A = 2. If we are 1 m apart we get capacitance of 2/1 = 2. Lets bring it closer together a few times: 2/0.5 = 4; 2/0.25 = 8; 2/0.125 = 16; If we reduce the distance by half 10 times we get 8192 times the capacitance. If we do it 30 times we get 8589934592 times the capacitance and we only have to bring the plates 1.86e-9 m = 1.9 nm closer together to double the capacitance once again. Engineers use capacitors to store braking energy in some electric cars and they can use the stored energy to make a quick start again.
Reading the comments on here, I see a lot of people say this is too fast. I don't think this is meant to be a video for learning the material, but instead review material. To truly explore, you'll have to crack the text book and derive the equations for yourself. Best of luck!
After many months fuming about how poorly this was taught to me in physics class, the thing about the test charge between the plates finally made everything click... well after I needed it for the final.
Thank you so much for bringing this into my life. Thank you for everything that you do. Ive been waiting a long time for these episodes on electricity. I can't wait to see what's to come. Is there anything to come involving Faradays law?
I may be a bit slow but I always seem to get lost with her explanations, while following along with just fine with other people they use to explain things I know nothing about... It's like I've been enrolled into a 201 class without taking the intro 101 class :(
I use capacitors for years and understand how they work. But watching this video make me unlearn reality. The defibrilator has never been explained : how much voltage and current need to flow thru the adult/child body? How long the electric pulse last? What is the typical value in micro-farad of the capacitor used in the defibrilator? What would be the value in farad for to plate of 1 meter squared at distance of 1 mm? Then, inserting an isolator material that keep the plates at same distance, how much more farad we would get? Assuming the best or the cheapest material. Then, adding an electrolyte, how much more farad we typically get? Finally, making the plate "bumpy" to increase surface area, like in super capacitors, how much improvement we realistically expect? All that is just describing the physical construction of a capacitor. Such knowledge is needed only for a handful of companies who produce capacitors. The much more practical knowledge needed is how a capacitor really work in real example of electronic circuit?
As someone who is learning electronics to become an electronic engineer, don't be discouraged because of this episode, since I did not really get a lot of what she is saying.
I'm a Mechanical Engineer, and i can tell you this is not AT ALL how this subject is supposed to be taught! This whole physics series is TERRIBLE, to the point that i would encourage CC to take them down, as to not discourage people from these subjects. THIS IS NOT HOW IT IS SUPPOSED TO BE TAUGHT!
Which is evident in that it is part of a series called "Crash Course." This is fine for someone trying to find a condensed summary of what they learned in a physics unit.
@@ichbinein123 You want CC to take them down so people don't get discouraged? Taking them down is not going to encourage people to learn physics, either. Some people get it, some people don't. If you don't, it's clearly not for you. That doesn't mean you have to take it down for the rest of the people who actually understand the information being taught and want to learn more.
I wish this was scripted better. I've watched all the crash courses and this one has consistently felt... unrelatable. At 4:24 I perked up expecting "finding the potential point charge is like *fun metaphor*" but instead it was "...is like *more technical jargon*". I know this is just my expectation but I feel like the amazing writing of the other crash courses have given me that expectation. This is my favourite field of science and this is boring me to tears. :( I don't know, it's not just that bit, it's the whole series. And it's not the host, she's great. I just wish she had some fun things to say to make this a little more... welcoming.
I'm a big fan of crash course, particularly the biology stuff which has helped me before, but really struggling with this physics stuff and was so hoping crash course would be able to help with my physics module! This just isn't explained simply enough for me I guess.
TheJaseku I think you caught a minor discrepancy between the animation and and the narration. The narration does not describe the field strength as negative, indeed, the previous animation does not, either. That minus sign looks like an error. Fortunately, the line of reasoning Dr Somara is describing is not, at this point in the story, dependent on the sign or direction of the electric field, but only on its magnitude. Good catch.
I believe they are teaching those who have an understanding and want to know more. It didn't say 101 in the title. It was a lot of info but seriously it wasn't that bad. I'm an engineer and the information was pretty basic but detailed. If you have trouble with this then you need a 101 class.
At 4:48, shouldn't the limits of integration have been inf and a specific distance r, rather than integrating -E from inf to 0? Electric potential would just go to infinity at distance 0.
They do if you're using them as the primary exposure to the material. But if you read the textbook to explore the equations by practicing, you can use these videos as review material and you won't be so concerned with keeping up to the video. After all, she just explained two hours worth of lecture material in 10 minutes.
I think the problem is in the video itself. Most people could understand the preceding videos without any other textbooks, but not this one. It really puts people down.
As a student, I actually think this is actually really good. It should've been taught in a pace that's about 1.5x-2x slower, though. Otherwise, a pretty neat summary!
for people saying this video is too fast. go to setting>speed>0.5 it won't really help you but it's kinda funny :P (this is why I'm not passing physics)
We made quiz questions to help you review the content in this episode! Find them on the free Crash Course App!
Download it here for Apple Devices: apple.co/3d4eyZo
Download it here for Android Devices: bit.ly/3TW06aP
Forget defibrillators, the 0.75 playback speed setting is the real lifesaver here.
👌😂😂😂😂😂😂😂😂😂👌
So true
Just a shout-out to anyone confused by this episode -- I am an electronic engineer by trade, and watching this video even I was bouncing between "that's technically true but so far removed from my day-to-day" to "wtf?". So if you found this confusing, do not be discouraged -- there are a wide variety of ways of teaching and understanding electronics, some of which may be more suited to your way of thinking. Do not give up!
TheHue's SciTech That's because she is teaching physics, not electronics. You are correct that electrical engineers rarely, while they are working with electronic devices, worry themselves much over the details of the physics. The reason is that most electronic devices can be considered in an abstract way, without worrying about the physics, and electronics is difficult enough without having to constantly concern oneself with the details of the physics. If an EE had to worry about the physics of charge carrier diffusion every time she put a transistor in a circuit, this Ipad I'm using would never have got built!
Mark Holm Absolutely correct, and I still feel my message is justified because I'm seeing "I will never be an engineer" messages in these comments, which I think isn't right.
TheHue's SciTech I wasn't trying to say your message isn't justified.
Mark Holm Absolutely, that's why I wrote "and" instead of "but" (possibly could have been clearer about that though :-) )
TheHue's SciTech dude this is basic emag. what kind of education as an engineer did you receive?
this is really helpful for someone that has studied this subject from a book before, like it shows the examples very clear. I dont recommend learning directly from this video, you have to have a previous knowledge
come on, it's ok if your video exceeds 10 minutes, we'll still watch it!
@Vaidheesh Bharadwaj I actually just discovered that this comment gained this amount of likes :'D. Thank you.
I don't even remember why I wrote it.
I don't get why everyone is complaining!!!! These videos are helping me pass physics!!!! Without them, I would've failed. It is a "crash course" so of course it is going be quick! It is meant for those who don't have time to watch a 1-hour long video. If these videos are not helping you then you could check other videos. I personally love this series and I am going to recommend it to my other fellow science students who don't know how to study a week before the exam and need to cram the last second :') I can't express how much I love this series, really... Thank you Crash Course and PBS Studios!!! Thank you Dr Somara!!!! I owe my career to ya'll
I really hope CC Physics gets to 50+ episodes, it really is a massive subject and covering all aspects of physics properly will take more vids in this playlist than I think any other subject would.
This series will go for 46 episodes (almost done shooting). After that we'll reflect on it and see if we want to tackle more :)
-Nick J.
Would one of the green brothers do the continuations? She speaks too quickly and with less of the charm I have associated with these series.
I like this series a lot, i think the host is amazing
The host is really great.
Will you guys also include Nuclear Physics such as Gamma Radiation and Fusion? I am going to have my public exam next year summer and I hope you can cover that as well.
Just for the record I would LOVEEE some math crash course. Either stats or calculus would be soo helpful!!
I swear. Capacitors get me every time. I've seen 26 episodes of this with no issues. As soon as the episode I want comes along, I just become lost in the matrix. Capacitors just absolutely destroy my brain for some reason.
Ok... so I am a senior computer engineering student who watches this series to refresh myself on the basics and I got lost at around 3 minutes. I know the material, but following this video actually started to confuse me. I am not 100% what the solution may be, but a slower more verbose explanation maybe helpful.
I'm an electronics student since over a year, and I got like only 40% of what she said.
These videos are terrible. I'm an ME, and i barely understood anything in this video, even though i consider myself very good with electric circuit, and have designed several costum PCB's both digital and analog in nature...
Or may be you guys are just stupid! I'm a high school student & I understood everything she taught
IKR 😂, I’m a high schl student too and these vids are actually extremely useful. Tbh I don’t get how uni level and grad students can’t understand them??
I'm a seventh grader studying for Science Olympiad and this video was crystal clear to me.
that's a real good episode. And for everyone saying it is to fast, try to pause between informations, take your notes and continue. After ending the video do yourself a test about what you learned and watch again, comparing what you gained with what's shown. Learning all those subjects takes a lot more than ten minutes.
I love this channel so much. It's more like crush course
I normally love Crash Course videos, but this one went completely over my head. Shini was waaaay too fast
I have to pause every now and then to understand the important concepts she's teaching, to let it really sink in, or I'd be really confused, still
Crash course is so darn awesome. I wanna see more.
This is definitely the most difficult Crash Course to follow so far - my "CCPhysics" notebook is practically unintelligible - but that just means I need to focus more... and maybe purchase "Physics for Dummies" as a supplementary learning tool like I did with the Anatomy & Physiology course.
I read our physics textbook and was able to follow this video. Thanks for helping me catch up on the lessons from when I was absent. Contrary to what the others say, this video taught electric potential in a straightforward, concise manner. I guess it would help to make the videos longer and elaborate further. For example, you could connect electric potential and charge with height and mass in gravitational potential energy. Still, great job on distilling this complicated topic. These videos help me achieve my goal of taking a physics course in college. :)
"Today we learned ... a lot."
Yes, yes we did.
Who here is during Covid-19 learning stuff.
JP 43 me
Anyone who is here currently? Dumb question stop trying to farm likes they do nothing anyways.
Selling Soul 5 Bucks this not for the likes I said it Just Cause. So yea, I was also interested for no reason whatsoever...
@@JP11155 Don't believe that at all. Obviously fishing for likes because it makes you feel good about yourself.
I don’t care about likes. And if you didn’t care either then why are you interrogating me saying that is the only this I care about, and I do this for likes. But what if did, what different would it make me? There are numerous other people saying comments for likes, fun, or because why not. Just because they comment something that looks like fishing for likes doesn’t mean that they have no life or self esteem. It’s just for fun. And if you care so much on how you think I fish for likes and have no life, but why even bring it up. WHO CARES? Even if they know that the person is fishing for likes then why bring it up, to make you feel good. Why are you even bringing this up? For what good comes out of this apart from exposing someone pointlessly. Just to try to point and try to put a stereotype on everyone else. UA-cam is for fun entertainment and learning. No body cares about likes. They are meaningless. And if you care enough about this to point this out for no apparent reason then your own benefit. Then why did you do this? Why did you add this in.
Thank you sooo much, I'm preparing for my physics exam and you explained everything in a simple manner. My textbook cannot compare.
P.S. To the people saying she needs to slow down, pause the video or change the playback speed.
What people here have to understand is that physics is HARD.
You can only dumb it down so much before it becomes too "dishonest" from what science predicts in the real world. As someone who is curious and really want to learn, what you have to do is to do active watching: pause the video to process what was just said or try and understand the equation that just popped up, rewind the last few seconds to rehear what she just said, and watch it over and over again a few days apart to really grasp the implications of the physics underneath. There is no miracle solution, science is very complex but we can't change physics in the universe to make it simpler, and that's the only way we can understand how our world work. Be patient with yourself! There is not a single scientist that learned any field of physics by simply reading it for the first time. I'm an electrical engineer and I still watch those videos to strengthen my basics! So don't give up, this channel is a good tool to learn, but you really have to put effort yourself as well to learn.
And trust me, if you can manage to do that, you'll be able to apply this skill everywhere in life and nothing will seem too hard for you to understand :)
She could elaborate. She could say let me put this in lay man's terms. She could say I can see how this might be a stumbling block for you so let me help you get over that hurdle. She is in plain terms a brilliant parrot but a lousy teacher.
thanks that's really encouraging
bien dit
James Graul yup even watching it at x0.75 makes it a lot easier to grasp too
You are saving lives by explaining physics so amazingly.
sloooowwww dooowwwwnnnn
Read the chapter from your book first, try a practice exercise or two, come back and you will find the pace fine. This is crash course, if you want a full work through of the ideas look up Walter Lewins lectures from MIT opencourseware, they are thorough.
you know you can't catch me I move too fast on the gas don't chase me
wow thanks for that i will use those sources of information
You can also change the audio speed
I watch your videos from time to time and I like how you explain difficult concepts without a landslide of maths , if I want my brain to be smashed to pieces by maths I can watch a Lenard Susskin M theory lecture . People like me want to learn the concepts more than the maths .
I was kind of lost during this video so I was very relieved when i saw many other people in the comment section felt the same.
how about slowing down and taking a breath this video is an assault on the senses I've still no idea what a capacitor is
Stuart Williams She told you, a capacitor is two parallel conductive plates with an electric charge between them, ie positive on one side and negative on the other. Later she added the interesting and practical fact that insulating materials between the plates can reduce the electric field between the plates allowing more charge to be put on the plates for a given voltage. Real world capacitors sometimes are exactly parallel metal plates, but very often, the plates are contained inside a package so that you can't see them.
Stuart Williams The most common use of capacitors by far is in circuits where the charge on the plates, thus the energy stored in them, is rapidly varying. They rapidly exchange energy with other components and that makes a huge range of electronic devices, from radios to computers, possible.
Exactly how I feel. Ha! I'm fucked.
👏👏👏
Its important to read the material and use these videos as review only. If this is your first exposure to the material, you will have a terrible time. Go back, read the chapter, complete practice exercises, and then return to find that this is a really awesome video very efficient at making these concepts concrete.
I understand that these videos are fast paced and that they are overall covering very challenging concepts quickly, however I find that pausing the video and intermittently taking notes is incredibly effective, for context I am a senior high school student. The pacing is fast, yet I feel we should be thankful for any free to access digital learning material, albeit with flaws.
there is a lot to unpack in this episode. I'll probably have to watch it two or three times but I've always wanted to know this stuff
Learned a lot! You just have to slow it down and pause it when you're trying to grasp a concept...
The energy stored in a capacitor is ½CV². Note the squared symbol. Thanks for the video!
Alan Gaul The equation given in the video uses Q, not C. When Q, the charge is used, the equation given in the video is correct. Converting between the two versions of the equation is trivial. Try it.
I'm cramming, so I have to watch these videos at a faster speed and let me tell you, the intro music is really exciting at 1.25 speed.
This is A LOT to take in for a 10 minutes video .... This chapter was covered in 3 weeks at my college
If I didn't already understand all of this, I'd have no chance of learning it at this pace.
The other crash courses seem more approachable even though this is my field.
True. It's a bit too fast.
Can't get enough time to comprehend
4:45
so, juice up a coil, put a ball bearing next to it, and rub with a ground line.
boom.
insta magnetic cannon.
got it.
_turns around and starts tinkering_
Thank you Crash Course for making these videos!!! :)
Very helpful and I appreciate the speed so I can cram vs wasting time looking in a video on what i need
I finally understand voltage!!!!!!!!! Yaaaaaaaaaaaaaaay!!!!!!!!!!!
'This lesson has the "potential" to save lives' 😂 hahahaha
The funniest part being barely anyone understanding it
I learned a lot!
Wow, what is the use of giving information at such high speed?
I can't process it that quickly and since I'm not special, I think many feel the same.
I really love the crash course series and i really like this host a lot. My only issue is I guess this series is not for a noob like me and more for the Physics student because as soon as she starts on the equations, I'm lost :)
Watch video at 0.5 speed. Repeat till info sinks in.
hi Hank, i love this channel! can you guys consider doing a CrashCourse on Environment Science, how global-warming occurs, climate change, inter governmental panel on climate change bio and non-biodegradable waste, population growth over the years, environmental impacts etc...that would be awesome!
When you're going along with the video but then you get too many equations and you ask yourself "What am I watching again? sounds like noise at this point"
10/10 too complicated for me.
I really like these cc physics videos, they are very helpful as far as the conceptual part of physics goes
This is the first episode where I didn't understand much
That awkward moment when the past two weeks of physics class was condensed into ten minutes, and subsequently fried my brain xD
To y'all complaining about the speed, good thing you can reduce the speed of the video !
Thank you for these videos! It's so helpful to get a fast recap of the material for an upcoming exam!
Thank God the Videos of crash course are always on UA-cam.....
Man I freaking love physics...........
And crash course in itself....
But please can't you start another Session of physics......
I Wanna know moreeee
This episode was quite shocking!
MadeofAwesome4ever hey that's pretty good
I am a sucker for obvious jokes!
Watt??!
really well explained . . . thank u
thx for another awesomely ha bisky physics lesson i was cleaning while i was listening to it but i think i understood it as much as i would have if i watched it
I love her smile and teaching-enthusiasm. Thank you miss, btw if someone knows her name, please tell me, thank u!!!
V=IxR Have a good day Everyone!
ok
RJ and PAULA not correct for a capacitor circuit.
RJ and PAULA v=l(r)
Ohm's law ftw!
i didnt learn anything but at least now i got some things straight, thx CC
Very educational!
Thanks!
I like the formula at minute 8:16 because it tells us that bringing the plates closer together is the best way to store more energy. It growths exponentially.
Let's say K*E0*A = 2. If we are 1 m apart we get capacitance of 2/1 = 2. Lets bring it closer together a few times:
2/0.5 = 4;
2/0.25 = 8;
2/0.125 = 16;
If we reduce the distance by half 10 times we get 8192 times the capacitance. If we do it 30 times we get 8589934592 times the capacitance and we only have to bring the plates 1.86e-9 m = 1.9 nm closer together to double the capacitance once again.
Engineers use capacitors to store braking energy in some electric cars and they can use the stored energy to make a quick start again.
i love how everyone in the comments expects to understand everything in a single 1x speed view of this video...
6:45 nanoferrets
I could listen to that voice for days!
Really helped me in my preboards thanks
Reading the comments on here, I see a lot of people say this is too fast. I don't think this is meant to be a video for learning the material, but instead review material. To truly explore, you'll have to crack the text book and derive the equations for yourself. Best of luck!
After many months fuming about how poorly this was taught to me in physics class, the thing about the test charge between the plates finally made everything click... well after I needed it for the final.
Thank you so much for bringing this into my life. Thank you for everything that you do. Ive been waiting a long time for these episodes on electricity. I can't wait to see what's to come. Is there anything to come involving Faradays law?
pun game strong, god damn.
djflow94 crash course puns are the best
I found out that we can slow down the speed on the setting button that's right bottom of the video. It helps!!:D
I may be a bit slow but I always seem to get lost with her explanations, while following along with just fine with other people they use to explain things I know nothing about... It's like I've been enrolled into a 201 class without taking the intro 101 class :(
I use capacitors for years and understand how they work. But watching this video make me unlearn reality. The defibrilator has never been explained : how much voltage and current need to flow thru the adult/child body? How long the electric pulse last?
What is the typical value in micro-farad of the capacitor used in the defibrilator?
What would be the value in farad for to plate of 1 meter squared at distance of 1 mm? Then, inserting an isolator material that keep the plates at same distance, how much more farad we would get? Assuming the best or the cheapest material. Then, adding an electrolyte, how much more farad we typically get? Finally, making the plate "bumpy" to increase surface area, like in super capacitors, how much improvement we realistically expect?
All that is just describing the physical construction of a capacitor. Such knowledge is needed only for a handful of companies who produce capacitors. The much more practical knowledge needed is how a capacitor really work in real example of electronic circuit?
THANK YOU SO MUCH.
It took me about 60 minutes of replays to process 10 minutes of content.
This episode is really richer than the previous ones :)
Let's take a moment to appreciate how crash course videos are so much more fun to watch than any other educative channel!
Was that meant to be hilarly 😂
is hillary*
Hah I thought that too
oh my god, she's even got the same glasses
This is why I never became an engineer. But I love trying to learn.
Me too :(
As someone who is learning electronics to become an electronic engineer, don't be discouraged because of this episode, since I did not really get a lot of what she is saying.
I'm a Mechanical Engineer, and i can tell you this is not AT ALL how this subject is supposed to be taught!
This whole physics series is TERRIBLE, to the point that i would encourage CC to take them down, as to not discourage people from these subjects.
THIS IS NOT HOW IT IS SUPPOSED TO BE TAUGHT!
Which is evident in that it is part of a series called "Crash Course." This is fine for someone trying to find a condensed summary of what they learned in a physics unit.
@@ichbinein123 You want CC to take them down so people don't get discouraged? Taking them down is not going to encourage people to learn physics, either. Some people get it, some people don't. If you don't, it's clearly not for you. That doesn't mean you have to take it down for the rest of the people who actually understand the information being taught and want to learn more.
awesome!!
Wow she just covered an entire semester's worth of lecture in that 10min video.
omg this courses just a week before my test
I wish this was scripted better. I've watched all the crash courses and this one has consistently felt... unrelatable.
At 4:24 I perked up expecting "finding the potential point charge is like *fun metaphor*" but instead it was "...is like *more technical jargon*".
I know this is just my expectation but I feel like the amazing writing of the other crash courses have given me that expectation. This is my favourite field of science and this is boring me to tears. :(
I don't know, it's not just that bit, it's the whole series. And it's not the host, she's great. I just wish she had some fun things to say to make this a little more... welcoming.
Heyy!! Thank you for this videos, they are amazing.
I'm a big fan of crash course, particularly the biology stuff which has helped me before, but really struggling with this physics stuff and was so hoping crash course would be able to help with my physics module! This just isn't explained simply enough for me I guess.
3:32 Why isn't it -1V (I know that there is no negative voltage, but.) -1000*0,001 = -1 in my world :/
TheJaseku I think you caught a minor discrepancy between the animation and and the narration. The narration does not describe the field strength as negative, indeed, the previous animation does not, either. That minus sign looks like an error. Fortunately, the line of reasoning Dr Somara is describing is not, at this point in the story, dependent on the sign or direction of the electric field, but only on its magnitude. Good catch.
i really liked the channel .... i am searching for lessons in same way but in french please !!
The... electric potential..
To save lives bahaha
NICE VID THOU
gr8 video!
One of the rappers Eminem terrified to diss
MOAR! Your teaching style is great, and really easy to follow.
Electric potential energy
Electric potential
Voltage
Capacitors
Maximum energy storage
Calculate potential energy
I believe they are teaching those who have an understanding and want to know more. It didn't say 101 in the title. It was a lot of info but seriously it wasn't that bad. I'm an engineer and the information was pretty basic but detailed. If you have trouble with this then you need a 101 class.
love it!!!!!
Crash Course Computers next maybe? (hardware, operating systems, GPU, CPU, coding, etc.)???!!!
The potential of these technologies are shocking
hi just wondering whether i can use the equation V=W/Q to find the voltage of a battery rather than using the equation V=I.R
At 4:48, shouldn't the limits of integration have been inf and a specific distance r, rather than integrating -E from inf to 0? Electric potential would just go to infinity at distance 0.
Is it just me or do these videos go a bit too fast for just about anyone?
They do if you're using them as the primary exposure to the material. But if you read the textbook to explore the equations by practicing, you can use these videos as review material and you won't be so concerned with keeping up to the video. After all, she just explained two hours worth of lecture material in 10 minutes.
i play it at 0.75 speed! this was the first time i did so, all the previous ones were quite clear and easy to follow
I think the problem is in the video itself. Most people could understand the preceding videos without any other textbooks, but not this one. It really puts people down.
Bioengineer Bro 😂 I am in high schl and I get mostly everything she said... If its too fast just play it back at a slower speed
Yeah lol usually I try x1.5 or x2 speed for these videos but I couldn't keep up this time.
As a student, I actually think this is actually really good. It should've been taught in a pace that's about 1.5x-2x slower, though. Otherwise, a pretty neat summary!
Shini looks extra pretty in this video! ❤
Dang she is already at Engineering Physics II! Let's go!
this video was so complete, im brain hurts
uni physics 2. shes going as fast as my professor.🙃
for people saying this video is too fast.
go to setting>speed>0.5
it won't really help you but it's kinda funny :P
(this is why I'm not passing physics)