A sunny day
Sunday's Astro picture of the day was the solar spectrum -- who doesn't love the sun?
Image courtesy N. Sharp of KPNO (larger image and credit here). It's a high--resolution spectrum that's been folded many times to fit in a rectangular space. Those dark bands are absorption lines, caused by metals in the sun's atmosphere.
A cheap prism, or a piece of diffraction grating plastic, is just enough to resolve the most prominent Frauenhofer lines for yourself. Girl Scouts think that's really cool. Undergrads think it's utterly boring.
[That the image resembles a gay-pride rainbow sticker, and was posted on APOD 4 days before Stonewall Day, appears to be a coincidence.]
4 comments:
Wouldn't that make a great bumper sticker? Or laptop sticker, or whatever... Somebody should get cafepress to print some!
yeah - it never occurred to me before, but someone needs to start an entire "gay astronomers" organization, just so they can claim that as the official logo.
Total and completely OT: I tagged you. Hope you don't mind.
Oi, achei teu blog pelo google tá bem interessante gostei desse post. Quando der dá uma passada pelo meu blog, é sobre camisetas personalizadas, mostra passo a passo como criar uma camiseta personalizada bem maneira. Até mais.
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