How To See Air Currents

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=4tgOyU34D44

This is what the world would look like if you could see invisible air currents, temperature gradients, and differences in pressure or composition of the air. • Support Veritasium on Patreon: http://ve42.co/patreon • Special thanks to Patreon Supporters: • Tony Fadell, Donal Botkin, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen • I first saw a Schlieren imaging setup around ten years ago in Melbourne. I was immediately fascinated by the way I could see the warm air coming off my hand. I hadn't expected the currents to be moving that fast or to be so visible. This was a tricky setup to get right because alignment is very important and here I'm just working with what I had lying around the house mostly (plus the mirror). For the best Schlieren photography, making sure the mirror is stable is essential. I want to improve my setup so the mirror doesn't wobble back and forth too much creating the pulsing light and dark sections of this video. • The relationship between index of refraction of air and temperature, pressure, humidity and wavelength is complicated. This website will calculate it for you: http://emtoolbox.nist.gov/Wavelength/... • Slow motion by Hollywood Special Ops: http://www.hollywoodspecialops.com • Sound Effects by A Shell in the Pit: http://www.ashellinthepit.com • Filmed by Raquel Nuno • Special thanks to Blake Nichols for assistance

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