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1 jan 1970 ano - Exxon lowerd the cost of solar cells
Descrição:
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.
Adicionado na linha do tempo:
12 nov 2018
0
0
292
econ
Data:
1 jan 1970 ano
Agora
~ 54 years ago