2.2 Theories on the radio. Electromagnetic wave, one that took place during the band on the electromagnetic spectrum, which can be used to boil water, then reduce the heat to a great James A. Maxwell Hill was discovered during an inspection. math 1865 when the observed properties of light waves with some similarities. And similar to the results of monitoring of electricity and magnetism. He presented an equation that describes light waves and radio waves in the form of electromagnetic waves that travel in space 1887, Heinrich Hertz demonstrated the equations of Maxwell's as true. RF simulation created in his lab. Then there are various artifacts. Turnover And enable us to bring the radio waves used to transmit data through space has Nikola Tesla, and the School of Economics at Yale Mo Marco has been hailed as the inventor of the system, bring a radio to communicate to radio broadcasting. there are two systems: 1. AM (amplitude Modulation) transmission by changing the amplitude of the carrier wave by wave signal to send out. Transmission using frequency or medium frequency MF (Medium Frequency) radio transmission systems using AM frequency in the range 530-1600 kHz.
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