web site strikes new ground in further refining the definition of Light
Pollution. Based on the premise promoted by Catherin Rich
we try to show the fine points of light pollution. Light
pollution has always had a number of components; Urban Sky Glow, Glare,
Light Trespass, Over Lighting, and now Ecological and Medical aspects
Urban Sky Glow, the classic
brightening of the sky over our cities and the brightening of the sky
over far away observing sites such as our National Parks and
Glare, a common problem for Amateur
Astronomers in the form of "local" light pollution and often a
component of Light Trespass.
Light Trespass, a common problem for
Amateur Astronomers and average citizens alike.
Indirect Light Trespass, a term used
here to indicate Sky Glow, often caused by local sources which is so
severe that it is as if a flood light was directly illuminating the
property from off site.
Visual Light Pollution, Ecological
Light Pollution, Energy Waste
Ontario14 Aug 03 the night
of the East Coast USA Blackout.
Ontario15 Aug 03 to this
evening. Once again we are denied access to the night sky.
Light Pollution and
Green House Gas in Central California - How does upward wasted light contribute
to Global Warming? This
page provides examples of a number of Central California Cities
and the CO2 emissions that result from light pollution.