LED lighting will be the potential blowout into the homes of ordinary people
fecha:2010-12-01 17:20
Came 130 years of energy-per-watt incandescent bulb produces only 15 lumens of brightness, while 60 years ago the birth of the fluorescent tubes, energy efficiency, though now its up to 60 to 90 lumens per watt brightness, but in addition to energy savings, many other shortcomings and possible problems arising are also worthy of attention:
Classroom lighting
My children in school more than a year, decreased visual acuity on the This is an attentive mother to worry about vision loss, she always
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02/06 18:27