Need help reading, Sidney? I made an exception for SOLAR. BUT have you ever thought about how much TOXIC WASTE is generated making those solar cells?
Be careful what you wish for. You may get it.
BTW, there IS no possibility of shortage of silicon. SAND is silicon dioxide. Most rocks contain large amounts of silicon compounds. ISOLATING the silicon in a pure form, then doping it properly is trickier and more expensive and where all that toxic waste is generated.
In the Earth's crust
The order of abundance is oxygen (almost 50%), silicon (over 20%), aluminium, iron, magnesium, calcium, sodium, potassium. These are all the sorts of elements that rocks are mostly made out of.
In the Earth as a whole
Because of the core and the mantle, iron, nickel, and magnesium, become more important, but oxygen silicon, aluminium et al remain major overall constituents
madsci.org |
