Description: Satco S4881 130V Shatterproof Medium Base 40-Watt A15 Light Bulb, Frosted Product Details Brand: Satco Light Type: General Service Special Feature: Shatter Resistant Wattage: 40 watts Bulb Shape Size: A15 2500 average rated hours 40-Watt medium base Frosted bulb The basic design of the incandescent lamp has not changed much since the late 1800s, when Thomas Alva Edison successfully produced the fist 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.
Price: 18.28 USD
Location: New York, New York
End Time: 2024-12-23T12:00:24.000Z
Shipping Cost: 0 USD
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Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
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Brand: Satco
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