They normally range from 500 to 2,000 watts in intensity. This type of lamp is more efficient than the common light bulb-type incandescent lamp, and it does not darken with age.
Quartz lamps get extremely hot, which makes ventilation important.
Because of the great heat associated with tungsten-halogen lighting instruments, burnt fingers are a hazard for the unwary. C are must also be taken not to subject the lamp to jolts while they are turned on, or the fragile internal element will break. HMI Lights H MI , which stands for Hydrargyrum Medium Arc-length Iodide, is a type of lighting element that emits an intense light that's the same color temperature as sunlight. The main disadvantage of the HMI light is the large, costly, high-voltage power supply that's needed. Now that we've covered the lamps used in lighting instruments, we can turn to the lighting instruments that house these lamps .