Why do soap bubbles appear colourful? | Wave optics | Physics | Khan Academy

What do a soap bubble and a blue morpho butterfly have in common? Their wonderful vibrant colours? That's correct! Let's understand how thin film interference leads to such vibrant colours.
00:00 Introduction
00:48 Breaking down the phrase - Thin film interference
01:50 Zooming into the soap bubble
03:21 Path difference between two light waves
04:03 Constructive and Destructive interference
05:38 Varying thickness of the film changes the colours we see
06:00 Why is the blue morpho butterfly blue?
06:54 Why don't we see colours in a liquid drop or a window pane
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Created by Vibhor Pandey

[@EffigyOfficial]

This is amazing! I've been thrown straigt into calculating inteference in thin films without understanding what was actually going on. I never understood why there was interference because the beams don't overlap in the pictures I've found. The fact that in happens in the eye made it all click and now I feel like I have a good grasp of this model! Thanks! I wonder why this isn't something brought up in the beginning of every lecture on this because it doesn't make sense otherwise

[@natemajor6560]

love this video thank you, you explain everything super clearly and intuitively

[@Arham1716]

Amazing Explanation!!!

[@Rohan-e7b]

Your way explaining is just splendiddd broo!!

[@aditiyadav274]

This is so cool n awesomeee

[@ahilvh5084]

Iwahh❤

[@aasthaofficial_yt]

Awesome

[@harishchand9760]

🥰

[@aditiyadav274]

We should be taught like this in school 😢