Here's a link to a good article on the subject in Sky and Telescope magazine.
http://skyandtelescope.com/resources/darksky/article_81_1.asp
here's another good site: www.darksky.org
The Pleiades constellation is often used as a metric for light pollution. If you can see 6 stars that's pretty good nowdays.
IMNSHO: Sodium vapor street lights are certanly necessary for highways and downtown areas, but do small villages (been to Dryden, NY?) need a light every 30 ft to 'protect' the community? I'd feel safer with my eyes dark adapted. The issue obviously touches on overpopulation and crime.
-Ned
http://skyandtelescope.com/resources/darksky/article_81_1.asp
here's another good site: www.darksky.org
The Pleiades constellation is often used as a metric for light pollution. If you can see 6 stars that's pretty good nowdays.
IMNSHO: Sodium vapor street lights are certanly necessary for highways and downtown areas, but do small villages (been to Dryden, NY?) need a light every 30 ft to 'protect' the community? I'd feel safer with my eyes dark adapted. The issue obviously touches on overpopulation and crime.
-Ned