The first ARC lamps were developed in’09 by Sir Humphrey Davy. These lamps were carbonic arch lamps functioning with one carbon baguettes fixed at each of the two polls of a battery and creating through their touch a white incandescent light. If these baguettes were separated and put at a distance of 10 cm they would create a luminous strong white light arch. These principal is what stays at the base of the projector lamps present nowadays.
Posts Tagged ‘lamps’
The luminosity is measured in ANSI lumens. For the home projector, the luminosity has to be at least around 700 ANSI lumens.