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News
MagQuest: Measuring Earth’s Magnetic Field With Space-Based Quantum Sensors
9+ mon, 4+ day ago (346+ words) https://www.nasa.gov/image-feature/japans-northernmost-main-island-of-hokkaido " data-image-caption="Japan’s northermost island of Hokkaido, with the glow from Earth’s atmosphere visible. (Source: NASA, Aki Hoshide) " data-medium-file="https://hackaday.com/wp-content/uploads/2021/07/japan_northernmost_island_hokkaido_from_ISS.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2021/07/japan_northernmost_island_hokkaido_from_ISS.jpg?w=800" />Recently the MagQuest competition on improving the measuring of the Earth’s magnetic field announced that the contestants in…...
Building An Acoustic Radiometer
9+ mon, 3+ week ago (450+ words) [A circular metal vessel is shown, with a symmetrical rotor of four vanes standing inside. At the bottom of the vessel are four loudspeakers.]A Crookes radiometer, despite what many explanations claim, does not work because of radiation pressure. When…...