Our rating: False. Based on our research, we rate FALSE the claim that a compass wouldn't work if Earth is spherical. Compasses orient themselves to the Earth's magnetic field lines.

On the left appears a Han dynasty magnetic compass, in which a lodestone spoon rotates on a brass plate, while on the right is shown a smartphone with an internal magnetometer (Photo: ) 4 / 5.

This map and an internal magnetic ‘compass’ rely on distinct mechanisms, implying that turtles have two magnetic senses. Loggerhead sea turtles can learn to recognize foraging areas using ...

Monarch butterflies navigate to Mexico with an internal magnetic compass, scientists say June 25, 2014 More than 10 years ago Monarch butterflies use the sun to help steer them on their migrations.

MIT Researchers Find That Magnetic Pulses Directed at Brain Change People' s ... Study: Magnetic Waves Alter Moral Compass. By Alex Sundby. March 30, 2010 / 12:32 PM EDT ...

The earth’s magnetic field is generally consistent, which means hikers and sailors have been able to use it to avoid getting lost since the invention of the navigational compass a thousand years ...

The compass consists of a domino-sized chip filled with rubidium-87 atoms heated to exactly 113 degrees. These magnetically sensitive atoms orient themselves in certain ways when in the presence ...

Listening to local radio can cause robins to lose their way. Biologists have proved that the electromagnetic ‘noise’ from AM radio transmitters interferes with the Earth’s magnetic field ...