Stationary Waves vs Progressive Waves | A-level Physics

We compare and contrast stationary (standing) waves with progressive waves. We use PhET's simulation (see below) so that you really get to see the differences and commonalities between these waves. The four aspects that we discuss in comparing these waves are (1) amplitude, (2) frequency, (3) phase difference and (4) energy.
/ @forestlearn
We are grateful to PhET for the simulation used in the video:
PhET Interactive Simulations
University of Colorado Boulder
phet.colorado.edu/
The simulation used is: phet.colorado.edu/en/simulati...
#ForestLearn #alevelphysics #stationaryvsprogressivewaves #Seetheforestforthetrees #physics #thinklikeaphysicist

[@sheikhheisen]

This is a fantastic video. The simulation especially helped, but your clear way of explanation with that table of differences was superb too!

[@ForestLearn]

Many thanks, glad it was helpful :)

[@shifra3203]

I'm in debt
Thank you for the clear demonstration

[@ForestLearn]

My pleasure, glad I could help :)

[@commenter3840]

THANK YOU, your way of explaining things is 10/10

[@ForestLearn]

Thank you for watching and your very kind comment :)

[@dishasheth]

The visuals were really helpful.

[@ForestLearn]

Glad you found the video useful!

[@kuchikiacideee6670]

If I take 3 pencils, a ruler and a sharpner and throw them all as far as I can, no matter what happens, these items will always be stationary.

[@ForestLearn]

Stationery for life!

[@ARYAMANMULMI]

Sir can you explain this

[@ForestLearn]

@@ARYAMANMULMI What would you like to be explained?

[@aaryargowda9052]

They are all stationary items...😂😂😂😂

[@ForestLearn]

@@aaryargowda9052 :)

[@imran4935]

You're amazing. That was a wonderful video. I've learned more in these 14 minutes than I did in my university lectures. Thanks a lot.

[@ForestLearn]

That's awfully kind of you, glad it helped :)

[@_jubileeeeee]

First year in uni taking A level physics. This is helpful thanks

[@ForestLearn]

Great to hear that, all the best :)

[@a-cq3xu]

You save my taste about physics 😊

[@SRunjhun_2007]

You explained so patiently and the animations helped a lot. You gained a subscriber, sir!!

[@ForestLearn]

Thank you so much, it's a pleasure to be able to help you :)

[@shayonadas1197]

I was really confused about the two but the visuals helped a lot. Thanks👍

[@ForestLearn]

My pleasure, that's great to hear :)

[@fun_g]

Amazingly explained, you explaining the animations cleared everything.

[@ForestLearn]

Thanks, glad to hear that!

[@atharvgitte5169]

This is literally the BEST video on YT regarding this topic . May God Bless U brother ❤

[@ForestLearn]

Thank you for the kind words, they mean a lot to me :)

[@atharvgitte5169]

@@ForestLearn u r so humble dude , u just replied me. Keep up the gud work ✨

[@ForestLearn]

@@atharvgitte5169 Thanks :)

[@jailnet]

If you confused about amplitude of both waves. Progressive wave amplitude is same for all partials because each particle in progressive wave can take turn oscillating to maximum displacement

[@ForestLearn]

Correct - that's why I wrote 'the same for all particles' for the amplitude of a progressive wave.

[@muralimanohar9282]

This channel just needs 100k subscribers.

[@ForestLearn]

Spread the word and it might happen one day :)

[@ryrygoogoo]

We’ll that didn’t go very far

[@kowshiku6338]

Thank you sooo much, i was much confused about the difference between those. Ur visuals helped to clear the confusioms 👍

[@ForestLearn]

You're welcome 😊

[@samran4]

BEST VIDEO IVE SEEN SO FAR THANKS ALOT AND PLEASE MAKE MORE!!

[@ForestLearn]

Thanks so much :) Are there any particular topics you'd like to see videos on?

[@samran4]

@@ForestLearn maybe more on waves harmonics, and maybe some hard exam question walkthroughs if you can please. Thanks a lot once again.

[@ForestLearn]

@@samran4 Sure, thanks for your feedback :) Btw, not sure if you've seen this video, it's quite a comprehensive discussion of harmonics: ruclips.net/video/UjWe8Wiskc4/видео.html

[@depthking6857]

Fantastic visualisation and very clear narration, thank you!

[@ForestLearn]

Thanks :) All credit to the PhET team for the simulation. Check out their site in the description.

[@madridista8617]

I was very confused and worried about this topic
But you nailed it
Thankoo ❤️

[@ForestLearn]

My pleasure :)

[@shreyasingh4719]

You saved my life.... Thank you so much...... The topic is crystal clear now😊👍

[@ForestLearn]

That's great to hear :)

[@khalidal26]

excellent video, was looking for something like this

[@ForestLearn]

Thanks, glad you found it useful :)

[@dvbcvbgfg1314]

wow wow wow woooow superb thanks for mentioning the simulator

[@ForestLearn]

My Pleasure :)

[@ihavenoname677]

Thank you so much sir!
Animation really helps in understanding the concept clearly

[@ForestLearn]

Glad to hear that :)

[@Sg0224]

Im gonna smash that subscribe button 🎉 elegant explanation !

[@ForestLearn]

Thanks :)

[@sanatanisidd19]

Thank you it helps me a lot 🙏

[@ForestLearn]

You're welcome!

[@cms.177]

Hello Forest learn!!! Thankyou for this lesson! This helps very much!! And loving other lessons too!!!💜 I really appreciate your efforts 😊

[@ForestLearn]

Hey, my pleasure, really happy to hear you're finding the stuff useful :) There's a lot more to come yet!

[@mridulassv9652]

Thank you so much!!

[@ForestLearn]

You're welcome :)

[@ungabunga5287]

thank you for the visuals

[@ForestLearn]

My Pleasure :)

[@maggieclarkson3844]

I am on a binge of these videos! I think I will use some of them while teaching my students at school. I hope that's OK

[@ForestLearn]

Of course :)

[@md.abiazmustafiz2678]

Top notch simulation and very simply explained

[@ForestLearn]

Thanks! Credit for the simulation goes to the phet team.

[@Synzoku]

hey! are you planning to make more videos like this soon?

[@ForestLearn]

Thanks for your interest, I would certainly like to!

[@egortarkov7708]

That's awesome. The level of explanation that I needed.

[@ForestLearn]

Glad it helped!

[@learninglover195]

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Lots of love from India to you ❤🤟🥰

[@ForestLearn]

Thanks :)

[@abhishekbidhuri]

Thanks for the video PhET simulations were amazing👍

[@ForestLearn]

Thanks, they definitely are :)

[@BrokeBad]

why are you sooo underrated man ?

[@ForestLearn]

Underrated or not, if people find this stuff useful I'm happy :)

[@spikedmini1234]

Keep making more videos before exam season please :) (whenever they come)

[@ForestLearn]

Thanks for the encouragement! Anything you'd like to see in particular?

[@akbo3866]

Thank you very much , you helped me a lot

[@ForestLearn]

You're welcome, happy to hear that!

[@bagyaaluthge3111]

Subbed. Great explanation & video. Thanks.

[@ForestLearn]

My pleasure, thanks so much :)

[@sandersinghbais173]

The explanation is very nice.👍👍

[@ForestLearn]

Thank you :)

[@pratichidas1579]

Thank you!The animation helped a lot😊

[@ForestLearn]

:)

[@madridista8617]

Bro You are too good
Keep uploading such amazing animations❤️
Subscribed you😊

[@ForestLearn]

Thanks so much! All credit to the PhET team for the simulation - check out their site in the description. Their hard work and dedication is what made the visuals in this video possible.

[@lex-is9ge]

You're literally an angel sent by God. There was no other vid like this on RUclips

[@ForestLearn]

I suspected as much (about there being no other vid like it) :)

[@ruchikadevashish7395]

Thank You So Much. It was really Helpful. 🙏🏻

[@ForestLearn]

My pleasure :)

[@adityapradhan2025]

Thanks a ton for this explanation 😃👍🏽

[@ForestLearn]

Glad it was helpful!

[@MusicmanSL]

Thank you ..!
Great👌👌👌

[@ForestLearn]

Welcome 😊

[@mamdouhabdalmonam670]

Excellent explanation thanks

[@ForestLearn]

Thank you!

[@siluniliyanage7394]

Thank you so much!!!🙏🏻

[@ForestLearn]

My pleasure :)

[@mharsha3516]

thankyou, was very clear with the simulation and helped me understanding of the stationary waves.

[@ForestLearn]

You're welcome :)

[@mdinesh8815]

graphics are awesome

[@ForestLearn]

Thanks - all credit to the PhET team for the simulation. Check out their site in the description.

[@AdityaSharma-vg1fl]

Very beautifully explained

[@ForestLearn]

Thanks for the kind words :)

[@intesharalam8914]

Great explanation.😊
Thank you!

[@ForestLearn]

My pleasure :)

[@lakshaylk784]

Thnxx a lot 😁 it rlly cleared all my doubts

[@ForestLearn]

That's great to hear :)

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it was really helpful and helped me a lot to prepare for my exam

[@ForestLearn]

That's great to hear, hope you do well on it :)

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[@ForestLearn]

With your support and that of other viewers maybe one day...thanks for the encouragement!

[@shreyasingh4719]

@@ForestLearn Definitely..... you deserve it!

[@ForestLearn]

@@shreyasingh4719 Thanks :)

[@shubhangikumari4204]

This really helped thanks

[@ForestLearn]

Glad to hear that!

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🔥🔥🔥

[@ForestLearn]

:)

[@simplexsettlings9361]

Thank you... A lot

[@ForestLearn]

You're welcome :)

[@akshanadilrukshi507]

Thank you so much
It's so helpful 💕👍

[@ForestLearn]

You're welcome 😊

[@TMM0007]

11:52 bro you just triggered the entire maths community.
Btw thanks good explanation

[@ForestLearn]

:)

[@TMM0007]

@@ForestLearn :]

[@jm7476]

very very helpfull , thanks !!!

[@ForestLearn]

You're welcome!

[@danielkruizinga617]

Thank you :)

[@ForestLearn]

My pleasure :)

[@kunalpatwa1215]

Copyrights to Columbia 😂
However very nicely explained 😁😁🙏

[@ForestLearn]

Thanks...Colorado actually :) Not hiding anything, credits at end of video and in description. Also informed the PhET team!

[@shubhamjoshi9624]

Very good video

[@ForestLearn]

Many thanks :)

[@enjerking]

This will one day in the near future be a 6 mark question. AQA like a lot of comparison questions. Any chance of electric field vs gravitational field before paper 2?

[@ForestLearn]

Hmm...let's see if I can squeeze it in before then!

[@maalyraw9818]

Great video

[@ForestLearn]

Thanks :)

[@shazrylhakeemy8972]

Goood videooo 👍🏽

[@ForestLearn]

Thanks!

[@A2000skid]

Great explanation sir . Keep it up 👍🏻

[@ForestLearn]

Thanks :)

[@namithabhat4237]

Thank you very much sir!!. The visuals were really helpful.

[@ForestLearn]

Thanks, glad you found it useful :)

[@tatata70]

omg tysm

[@ForestLearn]

You're welcome!

[@mamdouhabdalmonam670]

Do standing waves is condition to produce sound or sound may result from progressive wave

[@ForestLearn]

You can get progressive sound waves and standing waves of sound as well. If you are listening to music from a speaker, then the sound waves reaching your ears are progressive waves (they transfer energy). If you blow over a tube, you can create standing waves of sound. Does that answer your question?

[@mamdouhabdalmonam670]

@@ForestLearn thanks but I want to know the origin of sound if i strike on atable or any type of sound must result from standing wave

[@ForestLearn]

@@mamdouhabdalmonam670 If you strike a table, the sound created is a progressive wave. To create standing waves of sound, you need some kind of 'tube', for example, musical instruments such as the flute.

[@mamdouhabdalmonam670]

@@ForestLearn thank you very very much

[@ForestLearn]

@@mamdouhabdalmonam670 No problem, happy to help :)

[@23_alvin_7]

u are lit my man

[@ForestLearn]

:)

[@emmayang-qq2ji]

what's the app that products the two waves?

[@ForestLearn]

phet.colorado.edu/en/simulations/wave-on-a-string

[@sanashaikh5303]

Voice so sexy i forgot what he taught

[@pratichidas1579]

Thank you!The animation helped a lot😊

[@ForestLearn]

:)