Why you need math

This must rank among the best explanations ever for why you need math outside of high school:

“Hard Day’s Night” Mystery chord solved using math

Five Beatles!  Indeed.

Eclipse? Opportunity for photographers to show off

Some photographers have the patience and skills to show off well.  Found this picture of last week’s eclipse, by Mark Langridge, on TwitPic:

Mark Langridge photograph of the May 20, 2012 annular eclipse

Annular eclipse of May 20, 2012 – photo by Mark Langridge via twitpic

Mr. Langridge provided details; he used a Celestron telescope with his Nikon camera:

Celestron CGEM 800 HD, Canon EOS 60Da, Kendrick Astro baadar solar filter.

Blow this image up, or go to Langridge’s TwitPic site and see it in its large format, glorious detail.  You can see the mountains on the Moon . . .