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1.    This is 2.    airboard. 3.    It consists of 4.     five main parts 5.    : the body, 6.    the engine, 7.     the fan, 8.    the handlebar 9.    two levers. 10. The body supports 11.     the rider 12.      the engine 13.      drives the fan 14.       The handlebar steers 15.  […]

Alexander Graham Bell.  The inventor of the telephone, Alexander Graham Bell, was born in Scotland, where he studied voice production and hearing. He later moved to America, where he combined this work with an investigation into the transmission of sound by electricity. Bell managed to transmit his voice electrically in 1875, patenting his idea the […]