Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency, so that quartz clocks and watches are at least an order of magnitude more accurate than mechanical clocks. Generally, some form of digital logic counts the cycles of this signal and provides a numerical time display, usually in units of hours, minutes, and seconds.
invented by Soviet Union
Salyut 1 (DOS-1) (Russian: Салют-1) was the world’s first space…
invented by Jan Czochralski
Silicon is a chemical element with the symbol Si and atomic number 14. It is a…
invented by Xerox PARC
The idea was first documented in a memo that Robert Metcalfe wrote.
invented by Wallace Carothers
Nylon is a generic designation for a family of synthetic polymers composed of…
Suggest an invention you think it should be here
Inventions that changed the world