Invention of cordless instruments
United States of America is the first nation to send people to moon. When they were on moon, they started to select samples of rock over there for inspection. To inspect, they would need instruments. All instruments needed electricity which needs connection between instruments and the plug.
But it is not possible to have the plug on moon. That's why they have invented the instruments which can operate without cord and wire. Hence, cordless instruments have got invented.
United States of America is the first nation to send people to moon. When they were on moon, they started to select samples of rock over there for inspection. To inspect, they would need instruments. All instruments needed electricity which needs connection between instruments and the plug.
But it is not possible to have the plug on moon. That's why they have invented the instruments which can operate without cord and wire. Hence, cordless instruments have got invented.
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