GENERAL KNOWLEDGE

Detailed explanation-1: -The earth inductor compass was first patented by Donald M. Bliss in 1912 and further refined in the 1920s by Paul R. Heyl and Lyman James Briggs of the United States National Bureau of Standards, and in 1924 by Morris Titterington at the Pioneer Instrument Company in Brooklyn, New York.

Detailed explanation-2: -A compass is a navigational instrument for determining direction relative to the Earth’s magnetic poles. It consists of a magnetized pointer (usually marked on the North end) free to align itself with Earth’s magnetic field. The compass greatly improved the safety and efficiency of travel, especially ocean travel.

Detailed explanation-3: -The ‘Earth Inductor’ is a simple generator, illustrating the principle that a changing magnetic field cutting across a loop of wire induces an electric current. In this case, the magnetic field is that of the earth. A coil of wire is rotated in the earth’s magnetic field, generating an emf.