Volks, I am digging deep into the noodle for this one but I believe I am remembering it correctly. We were studying aerial photography and satellite imaging in a Remote Sensing class. The reason the sky(on a clear day) and swimming pools are blue is because moisture(fog) reflects light primarily in the blue wavelengths. This phenomenon is called Rayleigh Scattering. To counteract this problem a minus blue(yellow) filter is used in aerial photography to reduce reflected light and sharpen the image. I assume it is for the same reason that they make some sunglasses and fog lights yellow. Please correct me if I am wrong. I was just hoping to use my Geography degree in some form other than being in charge of the Road Atlas when the band is on the road. :-) Dan Hall Alabama |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.