Another huge advantage of LED's over fluorescents:
LED manufacture uses far less dangerous chemicals. While LED's require small amounts of
adulterants to manufacture (typically rare earth metals) All fluorescents use
mercury vapor in small amounts to create light.
If the old fluorescent bulbs are not handled /
recycled correctly this mercury will get released to the environment.
Half of the mercury in the waters of the earth is from human
activities.
Copper is regulated in its use in California. It is not regulated Federally, but some other states probably regulate it.
The primary reason copper is regulated is that it is fairly highly toxic to plant life, and in particular to marine life....Here is a link to a MSDS,
http://www.agrium.com/uploads/Ultra_Yield_Copper_O xy_Sulfate_12_percent_MSDS14189.pdf [pdf sorry] scroll down to section 12, ecological information where it says
ECOTOXICITY May be harmful to livestock and wildlife if ingested. Clean up all spilled material, especially
where bulk fertilizer loading of equipment occurs to prevent animal exposure.
Aquatic/Marine Toxicity: U.S. D.O.T.: This material is listed as a Severe Marine Pollutant.
Slightly soluble. Slow release to watercourses may cause effects down stream from the
point of release. These effects may be limited by recovery of spilled material if recovery is
conducted immediately. Toxic to fish and other water organisms.
If you wanted to build a serious faraday cage it seems to only be an OK way to go...replastering with chicken wire would be fantastic.
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People keep claiming that melting sea-ice won't raise the sea level -this simply is not true. http://www.physorg.com/news5619.html (physorg.com)
Another huge advantage of LED's over fluorescents:
LED manufacture uses far less dangerous chemicals. While LED's require small amounts of adulterants to manufacture (typically rare earth metals) All fluorescents use mercury vapor in small amounts to create light. If the old fluorescent bulbs are not handled / recycled correctly this mercury will get released to the environment.
Half of the mercury in the waters of the earth is from human activities.
Source: http://www.usgs.gov/themes/factsheet/146-00/ (USGS)
Copper is regulated in its use in California. It is not regulated Federally, but some other states probably regulate it. The primary reason copper is regulated is that it is fairly highly toxic to plant life, and in particular to marine life....Here is a link to a MSDS, http://www.agrium.com/uploads/Ultra_Yield_Copper_O xy_Sulfate_12_percent_MSDS14189.pdf [pdf sorry] scroll down to section 12, ecological information where it says
ECOTOXICITY May be harmful to livestock and wildlife if ingested. Clean up all spilled material, especially
where bulk fertilizer loading of equipment occurs to prevent animal exposure.
Aquatic/Marine Toxicity: U.S. D.O.T.: This material is listed as a Severe Marine Pollutant.
Slightly soluble. Slow release to watercourses may cause effects down stream from the
point of release. These effects may be limited by recovery of spilled material if recovery is
conducted immediately. Toxic to fish and other water organisms.
If you wanted to build a serious faraday cage it seems to only be an OK way to go...replastering with chicken wire would be fantastic.