Solar panel efficency
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From: Archimedes' Lever on 12 Jun 2010 16:42 On Sat, 12 Jun 2010 20:44:09 +0100, Dirk Bruere at NeoPax <dirk.bruere(a)gmail.com> wrote: >On 12/06/2010 20:41, Archimedes' Lever wrote: >> On Sat, 12 Jun 2010 20:30:34 +0100, Dirk Bruere at NeoPax >> <dirk.bruere(a)gmail.com> wrote: >> >>>> Cadmium! Can they sell these in Europe, ROHS and all? >>> >>> They probably have a "do not lick" label for litigious US tourists. >> >> Uh... RoHs is a euro thing. >> >> The US banned Cadmium in the industry years ago. More proof that the >> whole rohs thing was a huge waste of money for the entire world. A hit >> this industry did not need. >> >> And there are exemptions, even for Cadmium, Mercury, and Lead. They >> are just not anywhere where contact is an imminent worry. > >Well, I do not mourn NiCd batteries. >I'll be happy when lead acid goes the same way. Lead acid batteries do not harm the environment. Metallic form lead does not get into the water table, and it get recycled anyway. COMPOUNDS of lead and mercury, etc. harm the environment, not the metallic form.
From: John Larkin on 12 Jun 2010 17:23 On Sat, 12 Jun 2010 13:42:33 -0700, Archimedes' Lever <OneBigLever(a)InfiniteSeries.Org> wrote: >On Sat, 12 Jun 2010 20:44:09 +0100, Dirk Bruere at NeoPax ><dirk.bruere(a)gmail.com> wrote: > >>On 12/06/2010 20:41, Archimedes' Lever wrote: >>> On Sat, 12 Jun 2010 20:30:34 +0100, Dirk Bruere at NeoPax >>> <dirk.bruere(a)gmail.com> wrote: >>> >>>>> Cadmium! Can they sell these in Europe, ROHS and all? >>>> >>>> They probably have a "do not lick" label for litigious US tourists. >>> >>> Uh... RoHs is a euro thing. >>> >>> The US banned Cadmium in the industry years ago. More proof that the >>> whole rohs thing was a huge waste of money for the entire world. A hit >>> this industry did not need. >>> >>> And there are exemptions, even for Cadmium, Mercury, and Lead. They >>> are just not anywhere where contact is an imminent worry. >> >>Well, I do not mourn NiCd batteries. >>I'll be happy when lead acid goes the same way. > > > Lead acid batteries do not harm the environment. > > Metallic form lead does not get into the water table, and it get >recycled anyway. COMPOUNDS of lead and mercury, etc. harm the >environment, not the metallic form. Lead-acid batteries are full of lead compounds. That's how they work. John
From: Dirk Bruere at NeoPax on 12 Jun 2010 17:24 On 12/06/2010 21:03, krw(a)att.bizzzzzzzzzzzz wrote: > On Sat, 12 Jun 2010 20:44:09 +0100, Dirk Bruere at NeoPax > <dirk.bruere(a)gmail.com> wrote: > >> On 12/06/2010 20:41, Archimedes' Lever wrote: >>> On Sat, 12 Jun 2010 20:30:34 +0100, Dirk Bruere at NeoPax >>> <dirk.bruere(a)gmail.com> wrote: >>> >>>>> Cadmium! Can they sell these in Europe, ROHS and all? >>>> >>>> They probably have a "do not lick" label for litigious US tourists. >>> >>> Uh... RoHs is a euro thing. >>> >>> The US banned Cadmium in the industry years ago. More proof that the >>> whole rohs thing was a huge waste of money for the entire world. A hit >>> this industry did not need. >>> >>> And there are exemptions, even for Cadmium, Mercury, and Lead. They >>> are just not anywhere where contact is an imminent worry. >> >> Well, I do not mourn NiCd batteries. > > NiCd has its place. NiMH certainly hasn't held up its promise. > >> I'll be happy when lead acid goes the same way. > > Lead-Acid (and SLA) has its place too. No one has come up with a replacement > for either one. IMHO someone should be seriously looking at Aluminium, as will as Lithium. There's plenty of the former available, and always will be. Not quite as good in theory, but ultimately perhaps a lot cheaper. -- Dirk http://www.transcendence.me.uk/ - Transcendence UK http://www.blogtalkradio.com/onetribe - Occult Talk Show
From: Archimedes' Lever on 12 Jun 2010 17:44 On Sat, 12 Jun 2010 14:22:39 -0700, John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >There was/is concern over whether LEDs and microwave fets are allowed, >what with the arsenic in GaAs. That is just silly. It is a crystal and is tightly bound.
From: John Larkin on 12 Jun 2010 18:20
On Sat, 12 Jun 2010 14:44:13 -0700, Archimedes' Lever <OneBigLever(a)InfiniteSeries.Org> wrote: >On Sat, 12 Jun 2010 14:22:39 -0700, John Larkin ><jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: > >>There was/is concern over whether LEDs and microwave fets are allowed, >>what with the arsenic in GaAs. > > > That is just silly. It is a crystal and is tightly bound. If you read the wording of the ROHS rules, that doesn't matter. It also doesn't matter how little GaAs is in a product. John |