Who invented fridge?
In 1758, William Cullen demonstrated artificial fridge for the first time at the University of Glasgow. The Swiss inventor invented fridge machine in the year 1874. In the year 1805 Oliver Evans invented fridge utilizing vapor. Who invented ham radio? Ham radio was invented by three operators. They are Hertz, Armstrong and Marconi. Hertz demonstrated electromagnetic waves in the year 1988. Armstrong developed oscillator circuit for the work of radio frequency and Marconi started the first radio contact. Who invented light? Light has been invented by the inventor Edison in the year 1889. He started light company in the same year. His birthplace is in Milan, United States of America. Who invented loudspeaker? In the year 1898, the designer Horace Short has copyrighted the design of loudspeaker. In the same year ribbon loudspeaker was invented by Walter H. Schottky. Who invented lcd? George Heilmeier and James Fergason invented lcd in the year 1969. George Heilmeiers lcd display the metho
