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Problem Three - Light Pollution <br /> White light is a poor option for astronomical <br /> studies.The blue light portion of white light <br /> scatters in the atmosphere,causing light <br /> pollution that jeopardizes the night sky. <br /> Solution—Install street lights with a Spectral <br /> Power Distribution that has a low blue <br /> content AND a color different from the amber <br /> traffic light at intersections and crosswalks. <br /> Problem Three- Light Pollution <br /> Sky Quality <br /> 1.0 : i: : : : i : , : : (, ... i, ,i ,) :: : : i: ,) 11 :4 : <br /> 5 a - I . <br /> - i i _ <br /> w 0.6---'crwwwoien,uon of Wecommeneed ! I i - <br /> g _ iarc.m.nwwnnnm I ..wi.wiwmaereky I i i <br /> I _.quality j I I - <br /> $ oneenwrewt I _ <br /> _-___.t?S A N D Amber t Rafilc lighti._...._._._..._ <br /> 0.0 <br /> 400 450 500 550 600 650 700 750 <br /> Wavelength(nm) <br /> Problem Three- Light Pollution <br /> Human Vision <br /> —8aotple ow w W tbo 6.1)tr(am.) <br /> 1 2:-.... ......................._www.O.O+d+rwyt w..q n..C.'..(cow)._ <br /> r <br /> N F. <br /> :_ ' - <br /> o.e-i I. i i - <br /> f. <br /> t <br /> : <br /> : : .1 - <br /> II i - <br /> 400 450 500 560 600 650 700 750 <br /> Wavelength(nm) <br /> Mod Ko ensn Wow Red <br /> 3 <br />