Question

Who discovered the ultra-short radio waves?

Answer 1

Hint: Radio waves were first predicted by James Clerk Maxwell.
 Heinrich Hertz was the first to generate radio waves under experimental conditions.
 They range from \[3{\text{ }}kHz\] to \[3000{\text{ }}GHz\] .

Complete answer:
A radio wave is transmitted by a transmitter and then detected by a receiver. An antenna acts as a transmitter and allows a radio transmitter to send energy into space and a receiver to pick up energy from space. Transmitters and receivers are typically made to operate over a limited range of frequencies.
While radio waves are moving very fast, around \[300000{\text{ }}km/s\] they are still slow on the cosmological scale. They expose metadata, when Bob sends the message to Alice using radio waves, Joe can detect that this message was sent (while he may not see message contents).
Radio waves from transmitter signals can be affected by the interference from the unwanted transmitted signal on the same frequency.
Radio waves require relatively complex electronics and energy sources to be efficiently sent and received.
They are very worst attenuated by the matter, reflected and refracted. There is a limited spectrum of radio waves. Spectrum is shared among multiple users.
Spectrum needs centralized management. Radio waves require a lot of energy to send information over long distances
Finally, the ultra-short radio was discovered by J.C Bose.

Note: Radio waves are just electromagnetic radiation.
Radio waves are normally used for underwater communication, television and radio broadcasts, cellular phone communication, and many other applications.
Radio waves of different lengths require different antennas to be emitted efficiently.