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Lighting

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Across
1.The outside of a light bulb.
3.A type of lamp which often uses a pair of carbon rods.
6.A coating on the inside of the glass of a flourescent lamp.
9.Opposite of dark.
10.The middle word in "L.E.D."
11.The pressure in a flourescent lamp.
12.A lamp which uses poisonous gas to produce light.
13.The substance used to make rods in arc lights.
15.A lamp which uses a metal filament to produce light.
17.The abbreviation of "Light emitting diode".
Down
2.An inert gas found in flourescent lamps.
4.A lamp consisting of two carbon rod electrodes in open air.
5.A metal used for the coiled filament in an incandescent lamp.
7.Used to power lights in your house today.
8.A poisonous gas used in flourescent lamps.
11.A compact lamp or electric light.
14.An electric light.
16.The last word in "L.E.D."

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