Heinrich Hertz

form of energy emitted and absorbed by particles which are charged which shows wave-like behavior as it travels through space

German physicist (1857–1894)

The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose formal expression in terms of SI base units is 1/s or s−1, meaning that one hertz is one per second or the reciprocal of one second. It is used only in the case of periodic events. It is named after Heinrich Rudolf Hertz (1857–1894), the first person to provide conclusive proof of the existence of electromagnetic waves. For high frequencies, the unit is commonly expressed in multiples: kilohertz

emission of electrons when light hits a material

type of radio antenna

German physicist (1920–1990)

Radio telecommunication tower

submillimeter wavelength radio telescope

German politician and judge (1827-1914)