This solar corona, a la solar eclipse, is truly amazing!
(O.K. This designates my previous instagram post to the “I’m not worthy” category!)
By Miloslav Druckmüller, via Colossal
.
Tag: solar energy
March 1, 2013
The sun is gorgeous? Yes, it is: especially when viewed under different wavelengths. #wow via @kejames
“Yellow-green light of 5500 Angstroms, for example, generally emanates from material of about 10,000 degrees F (5700 degrees C), which represents the surface of the sun. Extreme ultraviolet light of 94 Angstroms, on the other hand, comes from atoms that are about 11 million degrees F (6,300,000 degrees C) and is a good wavelength for looking at solar flares, which can reach such high temperatures. By examining pictures of the sun in a variety of wavelengths – as is done through such telescopes as NASA’s Solar Dynamics Observatory (SDO), NASA’s Solar Terrestrial Relations Observatory (STEREO) and the ESA/NASA Solar and Heliospheric Observatory (SOHO) — scientists can track how particles and heat move through the sun’s atmosphere.”
June 1, 2012
Solar powered cremation (a.k.a. funeral with a death ray)
Look at the schematic carefully, and you can just picture the proceedings. First you have the service in the room with the seats; then the casket would ceremoniously rise to the roof; whereupon a crane would lift it into the path of concentrated solar energy.
“A temperature of about 1,700° F. is required to provide incineration and a total of about 3,000,000 BTU’s is required to consume a corpse. Thus, at a supply rate of about 1,000,000 BTU/hour, cremation would take about three hours. A concave mirror-reflector bowl similar to the steam-producing Crosbyton hemisphere in Lubbock, Texas is considered a suitable collector. At 65 ft. diameter, a bowl of this type can produce approximately 1,000,000 BTU/Hr. under full sunshine conditions from mid-morning to mid-afternoon.”
Design by Kenneth H. Gardner, via Futility Closet.
