Standing Waves - IB Physics

I show how a standing wave is created with the superposition of two traveling waves, define nodes and antinodes, and show how to find the wavelength, amplitude, period, frequency, and velocity of a standing wave.

0:00 Traveling vs. Standing Waves
1:06 Standing Waves as the Superposition of Traveling Waves
2:08 Nodes and Antinodes
2:48 Wavelength and Amplitude
3:21 Period and Frequency
3:32 Frequency and Wavelength of Standing Wave = Those of Traveling Waves Which Make it Up
4:23 Velocity of Standing Wave
5:03 Example Problem

[md.tariqhasan]

Best visual content ever! Thanks! <3

Sir, I've been following you from the first day of my ib physics lesson. I've been watching your videos for the past two years and they've been quite helpful. My adventure will come to a conclusion in November 2022. I continue to revise using your videos. Thank you very much for these two years!!!

[zetace]

I miss topic 9! lots of trouble understanding some of those concepts. your lectures have helped me so much, best explanations ever, thank you a lot!

[sayhanrahman]

Really nice video. Not struggling anymore :)

[kanupriya_kaur]

Nice explanation 👌.. and even nice animation 😇
Sending thanks from INDIA 😄

[theambergryphon]

00:04 This lecture is about standing wave patterns in physics.

00:47 Standing waves are important in physics.

01:27 Standing waves are produced by the superposition of two traveling waves

02:21 Destructive interference creates standing waves with nodes and anti-nodes.

03:03 A standing wave has the same wavelength and frequency.

03:46 The period and frequency of traveling waves are equal to that of the standing wave.

04:29 A standing wave has a velocity equal to wavelength times frequency.

05:14 Standing waves have a velocity of 1 meter per second

[elibenaron]

Thank you for good content. Question: you form standing waves by fixing the two ends of the medium, making them not move, right? If the standing wave is the result of adding the two component waves (that are moving through each other), how then are those component waves not stationary at the ends? In the animation, we can see that the component waves are not stationary at the ends (e.g. at 1:16). But I thought the ends are fixed? I hope I am making my question clear. Help? I just want to understand standing waves properly lol.

[stevoofd]

Is there a reason the constituting travelling waves move in an opposite direction? I can understanding that the traveling waves need to vary in relation to eachother to overlap and form the standing waves, but assuming that travelling waves move only in one time direction (from past to future, which would correspond to the x-axis), the red travelling wave is moving Backwards in time.
You could make the red traveling wave move in the same direction as the blue one, but at a higher or lower speed as the blue one. This way they will produce standing waves and abide the same law of propagating forward in time.

Or am I missing something here? I was basing my interpretation on the study of sine waves in subtractive and additive synthesis in a music production context. Your example might very well describe two water waves moving towards eachother in space.

[asyirahsofiahkamal]

So is superposition happening when the two waves are "in phase" with each other?

[karenmaepanaguiton]

Hello I just wanna ask how will you know the number of standing waves are there?