If you stop to think about it, it’s a marvel that we can harness energy from the sun. But we do, thanks to solar panels equipped with photovoltaic cells that convert sunlight to electricity. That’s no ...
Abstract: CAD drawing restoration is one of the most urgent needs in industrial manufacturing. The existing research focuses on the digitization of CAD drawings, However, there are actually many ...
Astronomer Johann Caspar Staudacher sketched these sunspot drawings of long-lasting extreme magnetic storm activity in 1770. Credit: Hayakawa et al., 2017, https ...
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