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Satco S3871 130-Volt 60-Watt A15 Medium Base Light Bulb, Frosted (2-Pack)

Product ID: B01FR5C7A8 Condition: New

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Product Description

Satco S3871 130-Volt 60-Watt A15 Medium Base Light Bulb, Frosted (2-Pack)

60 watt A15 Incandescent; Frost; 2500 average rated hours; 570 lumens; Medium base; 130 volts
General Service Incandescent
Household or Commercial use
Long Life
130 volt

The basic design of the incandescent lamp has not changed much since the late 1800s, when Thomas Alva Edison successfully produced the first operational electric light bulb. The filament inside an incandescent lamp must be protected so that oxygen does not reach it and cause it to evaporate on contact. Most incandescent lamps are either vacuum-sealed or gas-filled. Incandescent lamp filaments are made of tungsten. Tungsten is a metal that can operate at very high temperatures without evaporating too quickly an resulting in early lamp failure. Incandescent filaments only convert about 10-Percent of the energy used into visible light, so it is necessary to use a material that can withstand extremely high temperatures. Most lamps use a coiled filament design, which has been found to be stronger and deliver better performance.