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The phase out has been referred to as "light bulb socialism". [131] The consumer preference for light bulbs in the EU was for incandescent bulbs, with many complaining at the time of the regulation's adoption about what was described as the ugliness [132] or the cold, flat, unnatural, dull light emanating from CFLs.
Some bulbs include a thermal switch which shorts the starting electrode to the adjacent main electrode, extinguishing the starting arc once the main arc strikes. The mercury-vapor lamp is a negative resistance device. This means its resistance decreases as the current through the tube increases. So if the lamp is connected directly to a ...
A high-pressure sodium street light in Toronto A high-pressure sodium-vapor lamp An HPS lamp that isn't entirely off. A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm.