TWCarlson

Colors

• Sunrise#Colors
• Sunset#Colors
• Sky#During the day
• Sky#Dusk and dawn
• Atmospheric optics#Sky coloration
• Rayleigh scattering#Reason for the blue color of the sky
• Diffuse sky radiation

Sunrise

A diagram of a sunrise or sunset, showing the effects of atmospheric refraction.

Positive sense of azimuth

Your helpful diagram is in use in the article azimuth. It shows the azimuth increasing in the counterclockwise direction, i.e. zero at north and 90° at west. This is the opposite sense of the usual convention for horizontal coordinates. I believe this could be corrected by simply reversing the diagram from right to left and adjusting the text. Do you agree? --Reuben (talk) 18:16, 5 May 2012 (UTC)

That's a good find -- I never noticed this before. I updated someone elses drawing from Italian to English without realizing that the direction was reversed. I'll go ahead and flip the diagram. Thanks for letting me know! TWCarlson (talk) 11:17, 7 May 2012 (UTC)

Looks great, thanks! --Reuben (talk) 18:55, 7 May 2012 (UTC)

Indiana state fair collapse images

A19 p394 photo 12

300 px|right|The stage roof collapsing toward spectators. The structure fell because of wind and inadequate lateral support.

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