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https://en.wikipedia.org/wiki/Haidinger%27s_brush https://en.wikipedia.org/wiki/Haidinger%27s_brush is a real and really cool phenomenon, but it detects light p
by tangent128 9y ago
https://en.wikipedia.org/wiki/Haidinger%27s_brush https://en.wikipedia.org/wiki/Haidinger%27s_brush is a real and really cool phenomenon, but it detects light polarization, not magnetic orientation.
- jasonkostempski 9y agoDoes the polarization of the light in sky correspond with the poles of the earth? If so, since the effect has direction, wouldnt you have a compass in the sky? I was just able to see the effect for the first time using this image [1] full screen on my phone :) Brightness up, screen rotation off, hold out the phone and turn it like your steering a car. Jumped right out at me. It's always at the center of my vision, so if I look around the screen as I'm turning, it follows. The yellow always points to the longer edges of my phone. It's hard to hold it in view when not turning though. [1] http://www.solidbackgrounds.com/images/2560x1600/2560x1600-vivid-sky-blue-solid-color-background.jpg http://www.solidbackgrounds.com/images/2560x1600/2560x1600-v...
- jasonkostempski 9y agoLooks like the polarization in the sky coresponds to the sun, not the poles. https://mysite.du.edu/~jcalvert/optics/haiding.htm https://mysite.du.edu/~jcalvert/optics/haiding.htm