Tiny compasses could improve navigation, brain imaging and more
A new strategy for measuring magnetic fields could one day lead to a host of new quantum sensors—from tools that might map out the activity of the human brain to devices that could help airplane ...
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Using a cellphone compass to measure tiny concentrations of compounds important for human health
More information: Mark Ferris et al, Quantitative, high-sensitivity measurement of liquid analytes using a smartphone compass, Nature Communications (2024). DOI: 10.1038/s41467-024-47073-2 This ...
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KS2 Maths: Using a compass and reading maps
A spade, a tape measure, a metal detector, and his son Ethan with his trusty compass. The map says to start at the old climbing tree and walk north for ten metres. It’s Ethan's job to find north ...
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Map symbols, direction and contour lines
The four main points on a compass are: north, east, south and west. A compass is used to work out direction. A four-point compass can give a rough direction whereas a sixteen-point compass is much ...