Another source of light pollution

On Saturday, 27 January 2018 20:05:11 UTC-5, Chris L Peterson wrote:
On Sat, 27 Jan 2018 16:38:50 -0800 (PST), RichA
wrote:

On Saturday, 27 January 2018 10:05:55 UTC-5, Chris L Peterson wrote:
On Fri, 26 Jan 2018 19:37:56 -0800 (PST), RichA
wrote:

Paris has rules against shop lights from 1-5am to deal with light pollution and energy waste. So of course, someone had to try to go around the rules.

http://www.glowee.eu/

Lighting in cities is generally a good thing.

Circadian rhythm disruption. 90% of people in the civilized world live in cities and most don't use pitch-black window blinds or curtains.

It is bad design if people are unable to have darkness where they
sleep. Good lighting design fixes that.

A city without lights would be terrible.

Cities in the West are moving away from wasted lighting, thankfully. In fact, in Toronto, it's darker in the core of the city (most of it) than the suburbs.
Even light directly solely at the ground can cause light pollution from reflection from concrete. Another source are hyper-bright headlights on cars and trucks. Sometimes headlights on premium SUVs are so bright it looks like they have their highbeams on.

On Sun, 28 Jan 2018 11:41:36 -0800 (PST), RichA
wrote:

On Saturday, 27 January 2018 20:05:11 UTC-5, Chris L Peterson wrote:
On Sat, 27 Jan 2018 16:38:50 -0800 (PST), RichA
wrote:

On Saturday, 27 January 2018 10:05:55 UTC-5, Chris L Peterson wrote:
On Fri, 26 Jan 2018 19:37:56 -0800 (PST), RichA
wrote:

Paris has rules against shop lights from 1-5am to deal with light pollution and energy waste. So of course, someone had to try to go around the rules.

http://www.glowee.eu/

Lighting in cities is generally a good thing.

Circadian rhythm disruption. 90% of people in the civilized world live in cities and most don't use pitch-black window blinds or curtains.

It is bad design if people are unable to have darkness where they
sleep. Good lighting design fixes that.

A city without lights would be terrible.

Cities in the West are moving away from wasted lighting, thankfully. In fact, in Toronto, it's darker in the core of the city (most of it) than the suburbs.

And yet, cities everywhere are using more and more lighting for pure
decoration.

On Sat, 27 Jan 2018 16:38:50 -0800 (PST), RichA
wrote:
Circadian rhythm disruption. 90% of people in the civilized world
live in cities and most don't use pitch-black window blinds or
curtains.

Anyone who want to can get and use such curtains. It's much harder to
put a pitch black blanket over the whole city to get dark skies...
:-)