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this is an industry where the product line is changing dramatically
due to improvements in Materials. For example light can be picked up
from multiple directions with a new design and they have learned how to "stack"
solar cells one on top of another. Now Graphene enters the arena and it conducts electricity at a rate of 100 % .... and that was flat...so they crumpled it and improved it again. New discoveries emerging everyday it seems like.
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