I thought this was a well written and informative piece of journalism.
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Posted 14 March 2019 - 07:42 AM
Very good article.
The real problem is getting this information to the masses...in a world now more divided than ever. This true problem will, I'm afraid, slide all the way down the 'problem tree' as folks don't see the immediate need.
Posted 14 March 2019 - 08:06 AM
Yes... and interesting that the marketeers just blow it off as inconsequential, despite growing evidence that artificial night lighting, especially bright blue-spectrum, negatively affects almost everything: “White LED streetlights are currently being marketed to cities and towns throughout the country in the name of energy efficiency and long-term cost savings, but such lights have a spectrum containing a strong spike at the wavelength that most effectively suppresses melatonin during the night. It is estimated that a ‘white’ LED lamp is at least five times more powerful in influencing circadian physiology than a high pressure sodium light based on melatonin suppression.”
Long ago, I designed and researched Light Bulbs for GE and Low Pressure Sodium Street Lights for ITT (Lighting Division)... No surprise, these research projects were driven by Marketing. That is to say, we Scientists had absolutely nothing say in utilization decisions. I also was a member of the IES (Illuminating Engineering Society) at the time, and was quite familiar with their profuse Standards Bible. Thing was, even that ~Scientific~ Tome was/is... 99% marketing driven. The Society Members were profoundly motivated (consciously or not) to conclude that we need more light, always more. So, not at all surprisingly, our standards, based on ~our studies show~ arm-waving... always concluded that there wasn't nearly enough lighting, any and all kinds.
Also, in that era, many doctors, commissioned by the American Tobacco Institute, concluded that cigarettes are good for firemen... because it conditions their lungs. Tom
Posted 14 March 2019 - 08:10 AM
How about these positive ad campaigns?
More turtles are attracted to LED than any other street light
More motorists are blinded by LED than any other headlight
More melatonin is destroyed by LED than any other room light Tom
Posted 14 March 2019 - 08:47 AM
FortisAlberta is in the business of selling electricity, so it would be unusual for them to conclude that anything was over illuminated. It sounds like the Canmore traffic engineering department is aware of the over-illumination issue, and will create some standards for street lighting that FortisAlberta will have to follow.
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