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The information on Groklaw is not intended to constitute legal advice. While Mark is a lawyer and he has asked other lawyers and law students to contribute articles, all of these articles are offered to help educate, not to provide specific legal advice. They are not your lawyers.

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Hmmmmm | 343 comments | Create New Account

Comments belong to whoever posts them. Please notify us of inappropriate comments.

Hmmmmm

Authored by: Anonymous on Thursday, June 20 2013 @ 09:02 PM EDT

The sky on Earthis blue due to Rayleigh scattering, the particle mix in the
Martian sky is entirely different and gives a different scattering spectrum. In

addition much of the Martian atmospheric dust is coloured which is not true
on Earth. The result is that ona normal day the overhead sky is yellow but at
sunset and sunrise you getboth reds and blues. The sky is also not uniformly
coloured. This results in a mix of effective colour temperatures across the
image. Sadly these are not true colour temperatures because the coloured
dust removes light unevenly across the spectrum, this results in
unpredictablecolour results.
Many years ago I had colleagues who proposed using photographic dyes that
matched human cone cells but this was never particularly successful and is a
disaster for scientifically useful photography.
NASA do not choose the colour channels of their cameras to make the most
satisfying holiday snaps but to give scientists the most useful data.

[ Reply to This | Parent | # ]

Yea - so there! - n/t - Authored by: Gringo_ on Friday, June 21 2013 @ 09:09 AM EDT
Hmmmmm - Authored by: Wol on Friday, June 21 2013 @ 09:51 AM EDT
Hmmmmm - Authored by: albert on Friday, June 21 2013 @ 12:06 PM EDT

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