0:2) write short notes
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EARTHA:-
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ANSWER :
Eartha is the world's largest rotating and revolving globe, located within the headquarters of the DeLorme mapping corporation in Yarmouth, Maine.[1] The globe weighs approximately 5,600 pounds (2,500 kg), and has a diameter of over 41 feet (12.5 m).
he globe was built with a scale of 1:1,000,000, on which one inch represents sixteen miles.[2][3] As with most globes, it is mounted at a 23.5 degree angle, the same axial tilt as the Earth itself; thus the equator is diagonal to the floor. Eartha is constructed around a truss structure which is called Omni-Span, and consists of over 6000 pieces of aluminum tubing. This is covered by a skin of 792 map panels, each covering 8 degrees of latitude and 10 degrees of longitude, and attached to the trusses with a custom-designed system of hidden bolts.Eartha was originally designed to be 42 feet (12.8 m) in diameter. In 1999, surveyors hired by the Guinness Book of World Records measured the globe at 41 feet 1.5 inches (12.53 m)
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