| Satco S3205 25 Watt - R14 - Reflector Spot - 120 Volt - Intermediate Base - Incandescent Light Bulb |  | Brand: Satco
Category: Home Improvement
Department: Lighting
List Price: $2.95
Buy New: $1.98
as of 6/2/2012 22:07 EDT details
You Save: $0.97 (33%)
New (8) from $1.98
Seller: 1000Bulbs
Sales Rank: 48,403
Media: Tools & Home Improvement
Number Of Items: 1
Shipping Weight (lbs): 0.1
Dimensions (in): 1 x 1 x 2.6
MPN: S3205
Model: S3205
UPC: 045923032059
EAN: 0045923032059
ASIN: B003YO46MW
Availability: Usually ships in 2-3 business days
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| Features:
| • | 1500 average rated hours | | • | 25-Watt intermediate base | | • | Clear light bulb |
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Product Description
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.
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