Tolchin lived at a campsite with members of the Amundsen-Scott Expedition, 1200 feet from the magnetic South Pole. He was the commanding officer of nine ...
The discovery of the magnetic compass was an event of GREAT importance in the history of people. It was the first documented instrument created by mankind that could be read using a precise scale. Of course the sundial had been around for a long time, but it doesn't move [just it's shadow does...
Mon, Mar 10 | from Mostly Trivial with your host Johnee Bee