It evolved- in tandem and in paralell with amateur or Ham radio. one can call Hugo Gernsback- who published all manner of radio and related hobby magazines- as in effect the founding father- Hugo also was a prolific science-fiction writer. The idea of bouncing radio signals off planets was suggested in sober language in his radio magazines as early as l927 ( the year Gina Lollobrigida rolled off the Lines, The Yankees were burning up the league- and the San Rafael went missing in action- exactly ten years BEFORE the much- better known Electra Project. Glug Glug.
The concept of modulating the amplitude of an AC current was known for a long time, around the end of the 19th Century and beginning of the 20th. It's just that nobody had the hardware to be able to generate it. I'd say the best candidate for 'inventor' was Lee deForest, who invented a practical triode vacuum tube, in 1907 I think, making it possible to modulate the RF signal on the plate with a small secondary AC signal applied to the grid.
no, mechanical waves are not radio waves
Radio waves ARE electromagnetic waves.
Radio waves are electromagnetic waves. The radio waves have the longest wavelengths in the electromagnetic spectrum. A radio wave has a much longer wavelength than does visible light. We use radio waves extensively for communications.
Radio waves were discovered before the radio was invented.
Radio waves and cell phones
no, mechanical waves are not radio waves
Transverse. Radio waves are electromagnetic waves, which are transverse.
Radio waves ARE electromagnetic waves.
No. Radar waves are one category of radio waves. Think of all the radio waves that are all around you right now . . . AM radio, FM radio, police and fire radio, highway patrol radio, taxi radio, television picture and sound radio waves, cellphone radio waves, garage-door-opener radio waves, bluetooth radio waves, WiFi waves, microwaves ... and you can't see any of them ! Radar waves can easily be there in the group.
by changing the amplitude or frequency of the radio waves.
Radio waves are electromagnetic waves occurring on the radio frequency portion of the electromagnetic spectrum.
No. Radio waves are a type of electromagnetic waves; electroctromagnetic waves are transverse waves.
How are radio waves formed?
Radio Waves - radio station - was created in 2010.
by changing the amplitude or frequency of the radio waves.
Radio and light waves are electromagnetic waves, sound waves are not.
Radio waves are electromagnetic waves. The radio waves have the longest wavelengths in the electromagnetic spectrum. A radio wave has a much longer wavelength than does visible light. We use radio waves extensively for communications.