What did we say, as citizens involved in the efforts to restore the beauty of the natural, healthy night

Using a maldefinition is perhaps the main obstacle on the way of restoring a sustainable night environment. See the beginning of the wikipedia item, for real definitions written by experts independent on polluting industries.

The Declaration was approved (16-1-4) at the 12. Symposium for the Protection of Night Sky in Bielsko-Biala, Sep 14-15, 2012. See its programme, an abstract of my lecture-appeal and an abstract of my secondary lecture on expressing and measuring light amounts, or even the "slides" for both lectures.

For better English of the Declaration, thanks are due to Bob Mizon. See its text to consider endorsing it too, as hundred people did after the 2012 Symposium. You may then use a form at web77.eu/ida/.

	Name	Last modified	Size	Description
	Parent Directory		-
	lp_what_is.pdf	2010-03-31 16:30	129K	defining and quantifying LP
	abstr_declaration.htm	2012-08-16 00:00	2.5K
	abstr_quantities.htm	2012-08-16 00:00	2.0K
	Light_quanti.pdf	2012-09-14 00:40	494K	how we measure light
	links/	2012-09-14 01:45	-
	sources/	2012-09-20 01:03	-
	Declaration.htm	2012-09-26 11:19	6.0K	Declaration with footnotes
	Light_pollutant_ap.pdf	2012-09-26 22:36	73K	lecture - appeal slides
	Declaration.cz.htm	2015-03-04 13:08	6.2K	in Czech, with footnotes