Present Technology and History

    Night Vision Camera

  • Research into night vision cameras started in the 1940’s, mostly for use by the military.
  • nightvisioncamera

    Solar Cell

  • Solar energy, or Light Energy, has been used as a source for heat and fire since the time of ancient Greek, Roman and Chinese cultures.
  • diagramofsolarcell

    Temperature Sensor

  • The first thermostat was invented by Warren S. Johnson in 1883.
  • temperaturesensor

    Motion Sensor

  • The first motion sensors were available around 1950 as part of a security system.
  • motionsensor

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