Light Pollution

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 

Light Polluti on Why is light directed upward? ight directed upward is wasted Los Angeles from Mount Wilson Observatory Los Angeles from Mount Wilson Observatory Wouldn’t it be more effective to put the lights above and direct it down? Too much light goes upward. needs better shielding better shielding very little goes up Street Light Spectra Low Pressure Sodium High Pressure Sodium Mercury Vapor Street Light Spectra Low Pressure Sodium High Pressure Sodium Mercury Vapor Street Light Spectra Low Pressure Sodium High Pressure Sodium Mercury Vapor Low Pressure Sodium Orion Filtered Low Pressure Sodium best outdoor lighting for all safety concerns pierces fog expensive bulb energy efficient brighter than high pressure sodium Why don’t people like low pressure sodium? Why don’t you like low pressure sodium? don’t like the color can’t see color looks like the traffic signal exceptions? high pressure sodium Mercury Vapor Low Pressure Sodium Recessed Lighting Light Trespass Does more light mean less crime? Crime Not Illuminate d to Minimum Standards Adequate ly Illuminat ed 98% 80% 2% 20% loss of night vision glare Light Pollution Losing Battle Rational Argument Against Emotional Argument in Favor Population Growth San Diego Southwestern College Texas High School aircraft carriers NY subways