The term hertz can be used as a synonym for hertz , a unit of frequency equivalent to 1 cycle per second . His symbol is Hz .
He concept derives from a proper name: Heinrich Rudolf Hertz , a physicist born on February 22, 1857 in Hamburg and deceased on January 1, 1894 in Bonn . This German scientist developed important studies on the generation, detection and transmission of electromagnetic waves .
Various sources of the electromagnetic field (a combination of electric fields and magnetic fields that oscillate and transport energy) can generate these waves that have the ability to propagate in a vacuum at the speed of the light . The X-rays , the visible light and the infrared radiation They are some of the manifestations of electromagnetic radiation.
To understand what a hertz is, we must understand what are the main characteristics of the waves . A wave implies that a disturbance spreads in space transporting energy but not matter . The point at which the wave crosses the equilibrium line is called node ; the point of maximum amplitude is the crest , while the lowest point is the valley. Is called cycle , on the other hand, to the route that goes from the node that marks the beginning of the crest path and extends to the node where the valley path ends.
Now we can go back to hertz: it's about the unity Which is equivalent to 1 cycle per second . This means that hertz can measure how many times a wave is repeated per second .