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Mercury vapor lamps have the lowest efficacy of the hidden family, which ranges from 30 lumens per watt for the smaller-wattage lamps to 65 lumens per watt for the larger-wattage lamps.
What are Mercury vapor lamps?
- A mercury-vapor lamp is a gas-discharge lamp that produces light by passing an electric arc through vaporized mercury.
- In most cases, the arc discharge is contained within a small fused quartz arc tube mounted within a larger soda lime or borosilicate glass bulb.
- The outer bulb can be clear or phosphor-coated; in either case, it provides thermal insulation, protection from the light's ultraviolet radiation, and a convenient mounting location for the fused quartz arc tube.
- The lowest efficacy of the hidden family is that of mercury vapor lamps, which ranges from 30 lumens per watt for lower-wattage lamps to 65 lumens per watt for higher-wattage lamps.
Therefore, mercury vapor lamps have the lowest efficacy of the hidden family, which ranges from 30 lumens per watt for the smaller-wattage lamps to 65 lumens per watt for the larger-wattage lamps.
Know more about Mercury vapor lamps here:
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