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Choosing a light source
Member rating: No Rating | Words: 4392 | Submitted: Sat Sep 22 2007
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Choosing a light source Task 1: Domestic * Filament light 1. Coiled tungsten filaments are the metal wires that glow brightly when electricity flows through them. 2. Connecting wires are the wires that carry electricity from the bulb's electrical contact to the filament. 3. Electrical contacts - the metallic base of the bulb, which connects to the electrical contacts of the lamp when the bulb is in the lamp. 4. Glass envelope - the thin layer of glass that surrounds the light bulb mechanism and the inert gases. 5. Glass fuse enclosure - glass that insulates the bulb's fuses - located in the stem of the bulb. 6. Mixture of inert gases at low pressures - the bulb is filled with inert (non-reactive) gases. 7. Screw cap - the threaded base of the bulb that secures it to a lamp. 8. Support wires - wires that physically hold up the filament. Incandescent lamps or bulbs...
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