Wow! A movie about the effects of light pollution!

Those 1950's-style sodium vapour streetlights that pour light up into
the sky have got to GO! Now it looks worse, like LED's will be used
in everything, including embedding in roads!! Things can only get
worse.

http://www.rottentomatoes.com/m/771241064/

Scammed Public wrote in news:2eb76192-0f6f-401f-
:

Those 1950's-style sodium vapour streetlights that pour light up into
the sky have got to GO! Now it looks worse, like LED's will be used
in everything, including embedding in roads!! Things can only get
worse.

http://www.rottentomatoes.com/m/771241064/



http://www.youtube.com/watch?v=6PxjFqQE8rk

On Jan 20, 6:55*pm, Scammed Public wrote:
Those 1950's-style sodium vapour streetlights that pour light up into
the sky have got to GO! *Now it looks worse, like LED's will be used
in everything, including embedding in roads!! *Things can only get
worse.

LEDs have the potential to be of far lower output for more localised
effect. Most outdoor lighting systems provide ridiculously high light
levels to cater for the rapid loss in intensity away from the actual
source. The high output is inevitably reflected off the ground into
the sky. Smaller units also offer the chance to make them tightly
directed in comparison with larger units. LED up-lighters would dazzle
anybody in the locality so are unlikely to be popular. Surface
embedding would be very unnatural and probably very unpleasant unless
of very low output.

Unless some form of wireless power supply can be arranged the cost and
vulnerability of hard wiring trillions of embedded LEDS would be
incredibly costly. Losses in hard cabling using low DC voltages could
be very high. Making the advances in efficiency worthless. Series
wiring would be even more vulnerable to weather and mechanical
damage.

I can see a desire to provide a gentle wash of light on buildings
instead of the present, garish and energy hungry floodlighting. The
ideal situation would be lighting which was (by law) responsive only
to human or vehicular presence. Street lamps which switch on and off
to pedestrian or vehicular presence provide potentially massive
savings in energy costs.They also provide higher personal safety and
security.

It is long overdue that cars no longer have blinding, long beam
headlamps. While still being expected to travel in opposite direction
on a narrow strip of asphalt! Many of these headlights have more to do
with styling accessories than carefully shaped beams to avoid dazzling
oncoming drivers. Better car lighting could greatly reduce the need
for street lighting. LEDS can provide for this need as anyone with a
high power LED torch or bicycle light can attest.