صفحه 1:
صفحه 2:
tepals
Polluti
on
صفحه 3:
صفحه 4:
Wet med directed و
صفحه 5:
ight directed upward is waste
صفحه 6:
Los Angeles
from Mount Wilson
Observatory
1QNQ
صفحه 7:
Los Angeles
from Mount Wilson
Observatory
صفحه 8:
Wouldn’t it
be more
effective to
put the
<ذ 20 علاط ون1
and direct it
down?
صفحه 9:
Too much
light goes
upward.
needs better
shielding
صفحه 10:
better shielding
very little goes up
صفحه 11:
Street Light
3 Spectra
a
Mercury Vapor
صفحه 12:
ل وك
Spectra 11
111016551011 01 ۱
ل
Mercury Vapor
صفحه 13:
Street Light
——
re Pressure Sodium
111016551011 0
ل
Mercury Vapor
صفحه 14:
Low Pressure Sodium
Orion
صفحه 15:
Filtered
صفحه 16:
Low Pressure Sodium
best outdoor lighting for all safety
concerns
pierces fog
تيت دوت oy
ات وتات
brighter than high pressure sodium
صفحه 17:
Why don’t people like
low pressure sodium?
صفحه 18:
Why don’t you like
low pressure sodium?
don’t like the color
can’t see color
looks like the traffic
signal
و
صفحه 19:
igh pressure sodium
صفحه 20:
Mercury Vapor
صفحه 21:
صفحه 22:
Recessed Lighting
صفحه 23:
صفحه 24:
صفحه 25:
Crime
80%
20%
98%
WAS
Not
Illuminate
dto
۱
- 0
17
11111
صفحه 26:
5 a
éloss of night vision
glare
صفحه 27:
Light
Pollution
Losing Battle
Rational Argument Against
Emotional Argument in
۱2-209
Population Growth
صفحه 28:
San cn ۱
۱ Lc
NY ۷ ره ۱