Traveling Waves: Crash Course Physics #17

[@crashcourse]

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

[@calebf3655]

You condensed a topic in 7 minutes in what took my school about 90 minutes

[@ussrnamewastaken7429]

Wish this would be all😢

[@jorricktv9550]

The moment you watch English physics videos for your German finals, so you learn English and physics at the same time xD

[@jackb5933]

whose here for digital learning

[@MalarikFilms]

Meee

[@Rival_Tofu]

Lmao me ☝️

[@КотлетаКиевская-ь4т]

i think everyone)

[@jennamichelle5043]

Meee, the video my teacher gave us didn't have all the answers

[@kanebailey1348]

Me

[@tahsyns.1506]

Thank you so much, I really needed this. We need more people like you and the guys from Crash Course, I thank all of them with the utmost love and appreciation. You are hero's that wear no capes.

[@jamesyu1093]

This series needs more views and likes; the content of the videos deserve WAY more views and likes.

[@jsan9456]

Welcome to earth. Our people like to learn about the universe but not about how it works.

[@william41017]

+Jairo San said what? What's the difference?

[@jamesyu1093]

william41017 Your statement makes 100% sense.

[@jsan9456]

william41017​ Cause they rely on old books to tell them about it but don't care for the actual physics thus low views....

[@ShaeyeStreamz]

+Null Null while that's true, people use outside help when they can't understand.

[@Kevessi]

Who is here, because they have physic test next day

[@loganolson3968]

You already know it 😂😂

[@rosegalbloom7237]

I have a physics test next class

[@Kevessi]

@@rosegalbloom7237 damn, i just came out of my test lol

[@swagzy4720]

Ye😢😅

[@Kevessi]

@@swagzy4720 lol

[@BieberhasTheSWAG]

This is the best class i've never attended.

[@Ma-fp4px]

same here

[@srushtipatil6739]

you mean ever?

[@BieberhasTheSWAG]

No i mean 'never'. Its a joke nevermnd hahah @Srushti patel

[@srushtipatil6739]

oh i get it

[@BieberhasTheSWAG]

What grade are you in?

[@industrialdonut7681]

Heard EXACTLY what I was looking for!! The speed of a wave depends ONLY on the medium!!! WOOOOOOOOOOOOOO!!!!!

[@quentinm.williams9]

My teacher KEEPS SAYING THAT

[@dasboi8386]

I kept scrolling and I couldn’t find the comment I was looking for. So I’m just gonna straight-up say it, she is very pretty.

[@averystark7772]

Das Boi agreed hell yeah she is

[@radishman7498]

No she definitely is not

[@hector8927]

I started watching this channel years ago, with John Green... and i cam back to it and i still this channel has one huge problem: The information is REALLY REALLY GOOD, but they give them to you SO FAST that you don't time to process that information. In this video you can see that this girl talks at an average speed but they cut the silence and edit it out. I think thay should tell everything a little bit more natural. Still, really really good channel.

[@verdatum]

It can sometimes be a problem. But it's one with an easy fix. When you listen to a video on a new topic, click on the frame so it gets focus, and then keep your hand hovered over the spacebar. When they say a thought that is new to you, hit the pause button and take a moment to digest; or go back to repeat if needed. So like, for CC Chemistry, I was pausing the thing pretty constantly. For this one, since transferring colleges made me retake tons of intro physics, I can pretty much just play it in the background and follow along. The great thing about removing all the pauses is than when you've become more comfortable with the topic, you can review the information very quickly and efficiently allowing you to figure out which portions you haven't completely absorbed.

[@thenry6769]

To solve that maybe lower the speed

[@webking25]

Real talk she kinda goes to fast for u to digest wat she says properly it's like she rushing to read off the teleprompter crash course philosophy phase is much more better but she is good also just goes a lil to fast

[@AnooDw]

its called crash course for a reason -_-! crash course means a fast intense training of a subject.

[@adambier2415]

This was way too compressed for me too. I’m going to try lowering the speed as well as pausing often. And before that, I’m going to do jumping jacks to get my heart going.

[@M_Chen333]

I like how she never used the real rope...

[@hiitsblakee7666]

It’s hard to be woke

[@tessamocha3846]

It’s a little too short

[@Michael-go9hm]

I dont like that she did not use real rope

[@americanabreak]

why ya'll complaining on this, did ya'll actually pay attention to the vid or to the rope?😂👌

[@quentinm.williams9]

LOL

[@yoko3770]

I love her videos, Ive used them this entire semester and its helped tremendously, totally have a B+ in Physics! Final is tomorrow thanks soo much!!!

[@fardeenous]

2:00 I FELT LIKE THE SOUND WAS COMING AROUND/BEHIND ME AND FREAKED OUT FOR A SECOND XD

[@kingbyrd.1512]

Lol

[@Gguy061]

the sound waves coming from her voice makes me melt 😍😍😍

[@MrGeekGamer]

One of the most interesting series so far!

[@AGreenSquidKid]

Y'all ever seen that meme with a picture of a dog holding his own leash and the caption is "When the teacher is useless so you have to learn everything on your own." I'm in that situation now and this stuff is really gonna help.

[@velkine7259]

Who is here because they're not in school but curious about how the world works

[@thegaspatthegateway]

THANK YOU for the *constant visual example* !!!

[@josbird]

this must have been a pain to animate

[@AgentOrangeX22]

This is a great series. Kudos to the host.

[@MrParticulate]

I don't mean to be rude. I really enjoy Crash Course Physics and all of Crash Course. But I've been watching most of these videos twice. Once to actually refresh my previous learning on the subject and once to go to sleep. It isn't boring, it's her voice. It's not a bad voice but it reminds me of someone I used to be involved with and her voice relaxed me. It's been a long day and a longer night. Keep up the great work.

[@sadik.oagile6779]

The noise cancelling headphones thing is so cool!

[@crashcourse]

I have a pair of noise cancelling headphones that I got for travelling on planes. It's fascinating but that signal it makes causes my head to feel SUPER WEIRD! -Nick J.

[@sadik.oagile6779]

I have used a pair before myself, It was surreal

[@sadik.oagile6779]

+CrashCourse Hey do you guys think it would be possible for Shini to talk about her personal experience studying engineering in varsity, if it was difficult to find a job after graduating and what she did to start finding jobs, like this particular one?

[@LetBBB6345789]

++ for making and sharing this crash course - for talking through this without a break (I can press the pause button to take time to reflect but it does make the listening experience any nicer)

[@hibiscusman]

Enjoying the series greatly! One criticism on the audio - something about the recording equipment or equalization or encoding is causing her "s" sounds to peak/distort. I've only noticed this in the past few episodes (maybe this one and the one before), but it is definitely consistent at this point. Hurts muh brains.

[@srishtiparihar960]

this video helped me to learn basic concept about waves thank you mam

[@mj47_dreamer]

THIS CHANNEL IS GOLD

[@Mattimerson]

Yaaay! I've been waiting for sound to come up, it's my favourite topic in physics. I'm a musician and music teacher, so I need to be able to explain the science behind sound to my students from time to time ^_^

[@emilielee3378]

My phys teacher is useless compared to this video. He gives NO EXAMPLE, NO GRAPH AND ONLY THEORY ON WHERE THE FORMULA COME FROM. And then expect us to understand every problem.

[@jade02824]

i agree!!! they never tell us how to remember things and what they mean!!!!! they just keep shoving info down our throats!

[@slk0030]

Thats all that you need in the exam hall probably

[@harlem8764]

That makes two of us.

[@gouranggarg2623]

I feel bad for you I guess they ain’t many good AP Physics teachers like mine

[@squidneythesquid2487]

I have a fantastic physics teacher, I just i need to ask too many questions in too short a time before a test

[@KarelPletsStriker]

3 years ago, I had no what this video was about and now I'm using this to catch up on my physics class lmao. How time has flown by

[@md.sazzadhossain6680]

I have a question. In the case of constructive superposition, each pulse has an energy of .5×kA^2. It means that the energy in the system is kA^2. But when they superpose, the amplitude becomes 2A. Then the energy in the system is .5×k×(2A)^2=2×kA^2 Where does the extra energy comes from?

[@mukz7447]

@Sebastian Barba dead meme sorry

[@Ryan-jl5yn]

this is a very complete video. tks it definitely helped me understand what my physics teacher was talking about

[@frontierbrainrobby5449]

I wish I had this when I was teaching myself Physics C, this series is great.

[@matthewku4563]

I like that at 1:37 there's a wave diagram on top the line of tiny waves on the water. And the tiny waves represent a straight line. Anyways, these vids are really cool. GOOD JOB, CREATE MORE LIKE THESE & OFC... DFTBA! :))

[@himanshujeebanjyoti5663]

When this video was uploaded on KZbin I was in my 8th standard and it is helping me now in 2022 in my college

[@gravitygrace8585]

YOU HAVE LITERALLY SAVED MY LIFE, THANK YOU SCIENCE WOMAN 👑👑

[@EpicGamerScout]

At 1:38, I love the yellow "crest" on top of the yellow background lol.

[@beaubunny4]

A good bit of this video I learned in the beginning chapters of my ultrasound physics class, I love this!!

[@rakshaaiyappan8193]

Where does the energy of the wave go at the instant of destructive interference? It can't disappear obviously, so how is it stored in that moment?

[@sofiag9925]

I love you I was so stressed about not knowing the content but you're so clear

[@oriselkirk2726]

Are we going to discuss the double slit experiment and quantum physics, or is this series focused only on mechanics?

[@Reporterreporter770]

wonderful job

[@crashcourse]

+

[@birdmn9930]

+CrashCourse I think you made a mistake

[@paulblasiman1818]

+

[@paulblasiman1818]

+Tony Weeks When you reply a plus sign to KZbin comments, the comment is considered more relevant by KZbin's algorithms, so more people are able to see it.

[@crashcourse]

So, really it's a short hand for us to say "Thanks!" -Nick J.

[@dv_jn]

This is the best channel for studies I've ever found. Can you please complete this physics series before december, I am planning to complete my full portion before December. it'll help!

[@bananapeel2243]

I LOVE YOU BECAUSE I ALWAYS FOUND NORMAL VIDEOS SO SLOW AND I LITERALLY GOT ANGRY WATCHING THEM BUT THIS IS PERFECT

[@sumaiyarameez8067]

Crash course is a live saver!!

[@cellogirl0096]

I wish I had this video last semester!

[@SeriouslyCross]

Great video, summed just about all of my AS Physics module on waves last year super clearly!

[@yurevcarag8793]

What a helpful series for an 8th grader!

[@jennyfaith5091]

This is a huge help!I came here cuz we have a checkup test on waves❤Thank you very much!

[@DonvanW]

I just watch this for her awesome voice

[@chamberlane2899]

Oh my gosh! Thank you crash course! Now I understand this!

[@anamali7947]

Thank you so much Crash Course! It all makes a lot more sense now!

[@mberry76]

At time 1:17, they show 1.5 wavelengths to equal the diameter. What do you think? Is this correct? Should the wavelength be equal to 2 diameters (1 diameter is half of a wavelength)? I know that this isn't related to the rest of the video, but it made me wonder.

[@nad4906]

My mind is blown... this is so interesting

[@misterphillippe56]

Best episode yet!

[@zaynebal-bedaiwi2878]

Nice job! This video is so good!!!

[@romaapluto]

CrashCourse is the BEST thing that has ever happened to Me.

[@PinkChucky15]

This is one of my favorite topics in physics :-)

[@bonnieliu3747]

THANK YOU CRASH COURSE!!! Helped so much with APs and classes :) Keep up the awesomeness!

[@أحمدمدحت-ت6ض]

Thanks from all of my heart to someone who put arabic sub 😍

[@riteeshbommaraju]

One of the best Physics Tutor. #Kudos #Crashcourse

[@butjok]

I fell in love.. With physics

[@javeriafaisal1525]

best teacher alive. 🔥

[@fgaming8255]

helped so much thanks 😊👍

[@anoopprasannan6826]

You are sooo good....i had become an addict to physics bcze of YOU😍

[@aluvhagiwimutshinyali5341]

this video surely makes physics way easier, special thanks to the crash course team

[@skunkmc]

I'm not so sure about the animation at 02:00. If it is intended to respresent similar waves (=same amplitude and same frequency) moving through diffenent media with different speeds resulting in different wavelengths, the lower wave must travel much faster, so a peak of the lower wave reaches the right end at the same frequency as one of the upper wave. Which is exactly what happens in nature, right? Or did I miss the point of that animation?

[@nooralisalem1215]

fav channel for studying

[@Chriss.lindstrom]

Fantastic video.

[@Teo117]

Fantastic!

[@bts-bt21army32]

Who’s here for Virtual school (online school bc Coronavirus ) Stay safe Crash Course and people in the world!

[@akindukalhan7430]

thank you sister!

[@megangilmore9355]

Great video! :)

[@mikecarlson8229]

So if a single pulse traveling left along a rope as a trough hits a fixed end and comes back to the right as a crest, could we say the energy it has before hitting the end is equivalent to the energy it has after since the crest is opposite the trough and the direction is opposite before and after, so energy is completely conserved?

[@magda_mf]

What is the exact difference between the continuous wave and the transverse wave? They were presented quite alike in this video.

[@them-trader802]

I have to say, this really explains what my teacher told me in 3 hours, in less than 10 minutes

[@xingmei818]

this reminded me of my high school physics class. I miss my teacher so much! (said a recent college graduate )

[@pimpin576]

Informative video. Thanks

[@livid9806]

This singular video was more helpful than an entire semester of lectures

[@william41017]

Can I ask a simple question? Why is it called traveling wave, is there any non-traveling ones?

[@verdatum]

That's a REALLY good question. The answer: Yes, there are! However, they are not called "non-traveling waves" they are called "standing waves"! Standing waves are fascinating. Since next week's topic is "Sound" there is a very good chance that standing waves will be covered, as standing waves come up a lot in the world of acoustics.

[@BunnyFett]

:D :D

[@12Rman21]

simpelest way to look at standing waves is to look at the pictures of waves in this video like at 1:39. If the point where the rope moves through the barrier between orange and blue doesn't move to the left or the right it is a standing wave.

[@crashcourse]

+

[@william41017]

Thanks guys

[@DrebinI893I]

😃 here's a magic trick , what did I come here for? 😆 not the waves 👀 best episode of crash course ever let's just keep putting you on episodes 😎 we can LEARN all day 🤣

[@eddiesanders2719]

Excellent!

[@tiranzyqueen7999]

wow this was really useful , thank you

[@macho8555]

Such an interesting topic ✨✨

[@spud-girl8517]

I love the amount of detail they go through

[@ahmedmutaz4250]

So helpful

[@ramonbalster502]

Can you please make a quantum physics series? I know it's not a regular school class but youtube gets me pretty confused about spin and what an electron is and such, perhaps you could explain such things?

[@yakirhadad1273]

Absolutely funtastic explanations!! You're great!

[@derpyhooves7349]

To be completely honest, I think waves should be the very first thing to be thaught in any education program, as they are probably the most fundamental thing in the entire universe as we know it.

[@Pope2501]

This is a huge improvement in the speaker's voice. She's speaking more slowly and anunciating. The auto-generated captions only had six mistakes.

[@saiphaneeshk.h.5482]

superb loved it...

[@ЗахарКоншин]

In this video you use A both for surface area and amplitude. They do have slightly different colors and text next to them, but maybe it’s still better to avoid it by using, for example, Ar for area and Am for amplitude in the future? Because at first glance I thought that there was a mistake at 4:53 - 5:00 due to I~A^2 shown earlier. But it’s just different A's.

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i love this channel

[@buenosdiasamericadelsur]

love these videos. it's a funnier way of learning.

[@grndragon7777777]

thank you

[@SilentRuth10]

Thank you for all your help! I can now survive statics and physics. :)

[@arulpraveen]

I think there is small error in one of the slides at 4:58. The intensity becomes proportional to 1/r^4 and not 1/r^2.

[@sulaiman5789]

Love you !!!

[@thestudentofficial5483]

Lol 3 hours binge watching this might worth more than 3 years of my physics class

[@NGBigfield]

If only I had this show while I was studying Physics in Highschool.