How does light diffraction work? Learn with lasers and human hair

Are you a fan of cool science experiments? Alvaro, a physicist from the Omni Calculator team, shows you how to measure the width of a human hair using nothing more than a handy online calculator and... the power of lasers!

Timestamps:
0:00 Introduction
1:04 Experiment showcase
3:09 Explaining diffraction
8:00 Validating the results
10:24 Summary

Credits
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Channel logo design: Farhan Khan
Quality control: Natalia Nazim, Farhan Khan, Reina Sagnip, and Mateusz Mucha
Host, Writer, Shooter, Editor: Alvaro Diez
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Wave interference animation:
Original source: Acoustics and Vibration Animations - Dan Russell, Grad. Prog. Acoustics, Penn State
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Intro animation music:
Song: Dojokratos - Towel Defence Jingle Loose
Music provided by FMA (Free Music Archive)
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Background Music
Song: Valcos & Chris Linton - Without You [NCS Release]
Music provided by NoCopyrightSounds

[natalianazim]

Such a brilliant experiment! Please upload more experiment videos!

[bognah.]

Really cool first video, take some validation

[dark]

I really like how rough and genuine it is. Pretty great 1st video.

[aleksandrazajac]

had I seen this in high school, i'd be signing up for physics immediately :D thanks for the great video, keep making more!

[macieknaz]

Nice video! I like your sense of humor :D

[hanna.p]

Super explanatory video! Congrats for making this topic easy ;)

[MateuszMuchaDev]

Now I know something I hadn't known before. Thanks, Alvaro!

[MrsLucyferyna]

Definitely the red one :3 I loved the video and the Star Wars references! As a little minus - I could see that you're not looking straight into the camera all the time. The rest was neat, keep it going!

[OmniSteve]

Hey, I loved this video. You definitely explained the topic well and made me understand it. Your style is nice and simplistic and makes the video more entertaining. Looking forward to more videos!

[InfoRanker]

Dude I use your calculators to figure out accurate scales in some of my videos. Thanks for the great service!

[mohammedmotaz]

I like your calculator sites dude, a lot of types and live answers. good job

[gipsio]

Nice channel, very cool stuff. I'm planning to do this experiment at home.

[juliaz.]

Can't wait to try this at home!! Thanks for sharing the materials

[lilapl]

wow! that's probably the first time I managed to understand anything from physics. Really cool! Want more :)

[macnaz]

I like how easily you explain all of this. More interesting than my physics lessons! :)

[StevesUniverse]

your page helped me understand planck's constant and photon energy. Nice experiment here, i came from a pop-up ad on your page

[PhysicsOnline]

This is a great video - and so well explained. I'd never thought of getting students to measure the width of their hair like this before.

[AlnisSmidchens]

Awesome video! I love how it tied together a physics explanation with a practical experiment that is really easy to do. I can't wait for more!

[magdalenaplewniak]

Hey! You are great physics' explainer. Enjoyed it a lot

[joannamichaowska]

This is cool! Can't wait for the next video!