Beth Parks has devised an astonishingly simple way to overcome a limitation of solar cells -- a bucket of water. She developed a frame that holds the solar cell with a bucket suspended on either end. By controlling the leak of water from one of the buckets, the solar cell shifts, tracking the arc of the sun throughout the day.
from Top Technology News -- ScienceDaily https://www.sciencedaily.com/releases/2019/03/190306125346.htm
from Top Technology News -- ScienceDaily https://www.sciencedaily.com/releases/2019/03/190306125346.htm
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