You spin me right round

The entire universe in blog form
June 29 2007 10:41 AM

You spin me right round

I am a big fan of optical illusions; I love 'em (see here and here and here and here). A lot of Bad Astronomy is due to one illusion or another, like the Glass Worm, but that's incidental. I just think they're cool.

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One of my favorites is the in-out illusion, where your brain can't tell if something is convex or concave. It's maddening, and fun. The Mighty Optical Illusions site has one of the best examples I have ever seen of it, a spinning silhouette that'll melt your brain. Go have a look!

Phil Plait writes Slate’s Bad Astronomy blog and is an astronomer, public speaker, science evangelizer, and author of Death From the Skies!