heinrich rudolf hertz was the first scientist who produced electromagnetic waves in a laboratory.
heinrich rudolf hertz was the first scientist who produced electromagnetic waves in a laboratory.
who was the first scientist who produce electromagnetic waves in a laboratory?
heinrich rudolf hertz
the idea of wireless communication predates the discovery of "radio" with experiments in "wireless telegraphy" via inductive and capacitive induction and transmission through the ground, water, and even train tracks from the 1830s on. james clerk maxwell showed in theoretical and mathematical form in 1864 that electromagnetic waves could propagate through free space. it is likely that the first intentional transmission of a signal by means of electromagnetic waves was performed in an experiment by david edward hughes around 1880, although this was considered to be induction at the time. in 1888 heinrich rudolf hertz was able to conclusively prove transmitted airborne electromagnetic waves in an experiment confirming maxwell's theory of electromagnetism.
history of radio
the other was research by physicists to confirm the theory of electromagnetism proposed in 1864 by scottish physicist james clerk maxwell, now called maxwell's equations. maxwell's theory showed that a combination of oscillating electric and magnetic fields could travel through space as an "electromagnetic wave". maxwell proposed that light consisted of electromagnetic waves of short wavelength, but no one knew how to prove this, or generate or detect electromagnetic waves of other wavelengths. by 1883 it was known that accelerated electric charges could produce electromagnetic waves, and george fitzgerald had calculated the output power of a loop antenna. fitzgerald in a brief note published in 1883 suggested that electromagnetic waves could be generated practically by discharging a capacitor rapidly; the method used in spark transmitters, however there is no indication that this inspired other inventors.
spark-gap transmitter