Waves: Phase Difference - IB Physics

I show how to find the phase of a wave and phase difference of two waves. Phase difference is a way of comparing two waves which otherwise share the same properties. Waves can be understood as graphs of circles, so we can use the angle properties of circles to describe differences between waves. I show why the formula for the angle of a phase works and how to use it.

0:00 Why Phase Difference is Important
0:29 Connection Between Waves and Circles
1:04 Using Angles to Describe Waves
2:11 Angles as Fractions of Waves
2:56 Definition of Phase Difference
3:26 Example 1 - Displacement-Position Graph
3:57 Example 2 - Displacement-Position Graph
4:18 Example 3 - Displacement-Time Graph
4:42 Simple Harmonic Motion Example 1
5:37 Simple Harmonic Motion Example 2
5:55 Negative Phase Difference

[marcusaurelius]

god bless you darling, you just saved my life

[zenda]

It's so simple n understandable... I wish I saw this a couple of years ago...😥 May God bless you ❤️

[salmaahmedMohamedAlkilany]

This video helped more than you will ever think it did, Thank you!

[SOUL.]

Now what should i say He just cleared the way of of teaching such a great

[lelosenpai]

I was soo confused of the explanation why waves are a circle when looking at phase graphs. Because I have a background in marketing but have to learn about photonics because my company sells photonic devices. And watching your video somehow it's starting to click for me. So easily to understand especially for those new and struggling with this stuff - even for those with an outside background. That's a big compliment and thank you! <333

[Islamicqueen]

You've clear all my doubts.. thankyou so much sir ❤

[jonramsey]

Dude awesome ..thank you for posting this video

[Rayanxd]

that is amazing way to explain wave difference
thank you

[HardikKundalwal]

1.5/4 = 3/8 got it. Thank you so much :)

[d.loshhhh]

hi sir can I know how ur getting the fraction of wave difference???? second example and third example and all u took 7/8 etc... I couldn't understand how it was taken???pls let me know how is it sir....

[ioriyagami]

Tomorrow I have a test and now I understand the phase and phase different, thank you so much🎉🎉🎉 our teacher explanation is so hard to understand😂😂😂

[priyanshukhede]

Angrej adhyapak bhi bahut accha padhate hai. You teach 👍 good

[abdullahmubarak]

Amazing video. May I know the instances at which one should use negative phase difference? Is positive the default? Thank you so much.

[rezamahmud]

Amazing video but how did you get the phase it as 5/8 in 4:05?

[bernardocisneros]

Are you sure about the shifting of the waveform about the X-axis (time) when it's a negative phase shift? I might be wrong, but I always thought that a negative phase shift would move the waveform to the right (i.e. any portion of the waveform would occur at a later time). Can you please explain. Thanks!

[wesleytaylor-rendal]

Simply outstanding! Can you do conjugate multiplication of the complexes

[judycheng]

I understood the first example, but not the last example of spring. Would be nice if there are a few lines drawn there.

[aburntnugget]

Hey, how did you get the fraction SHM example 1 and  2? Thanks in advance!

[harshwardhanshah]

Hi do you have videos for the HL part of waves and gravitation?

[mrkhunt.]

Is a -90˚ phase difference equal to 270˚ phase difference?