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1 ene 1970 año - Exxon lowerd the cost of solar cells
Descripción:
Exxon funded research of Dr.Elliot Bernam to prodice a cheaper solar cell. The cost was brought down from $300 to about $20 per watt.
Añadido al timeline:
12 nov 2018
0
0
299
econ
fecha:
1 ene 1970 año
Ahora mismo
~ 54 years ago