DRAWN TO MAGNETIC NORTH AND SUSPENDED IN LIQUID ... AND RITCHIE IS ONE OF THE LAST LARGE SCALE COMPASS MANUFACTURERS IN THE US. WE SAID THEY HAVE ABOUT 90% OF THE MARINE COMPASS MARKET IN THE ...
“By contrast, orientation behaviour that required use of the magnetic compass was disrupted by radiofrequency ... field as a map when navigating large distances. The authors suggest the two ...
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