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The Schlieren effect lets you see changes in air density

submitted by Aard Vark

(oritteropo)
7 years 7 months 3 weeks ago

YouTube description:

This unreal experiment allows you to see air movement around any object.

Download the music in this video:
Song #1: Over Rain
iTunes: https://itunes.apple.com/us/album/over-rain-single/id1033695238
Amazon: http://www.amazon.com/Over-Rain-brusspup/dp/B014JXPNSW/

Song #2: Abyss - iTunes: https://itunes.apple.com/us/album/abyss-single/id1033702454
Amazon download: http://www.amazon.com/Abyss-brusspup/dp/B014I4BFTI/

This is a demonstration of the Schlieren effect. This setup allows you to see changes in air density. The point light source is aimed at the concave mirror. The concave mirror reflects to a focal point. There you use a sharp edged object to partially block the light which helps create a shadow effect that allows you to see air movement.

Big Thank you to:
Ruud Verdaasdonk
Ko van der Lubbe
Phil Koken
VUMC

and everyone else that helped with this project.

Other Schlieren videos to check out:

https://www.youtube.com/watch?v=mLp_rSBzteI
https://www.youtube.com/watch?v=gE9Omyg6gIE

(via digg)