| 21. | At the end of life, many types of high-intensity discharge lamps exhibit a phenomenon known as " cycling ".
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| 22. | A gas-discharge lamp is an example of a device which, under certain conditions, has " negative differential " resistance.
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| 23. | A gas-discharge lamp is capable of exceeding the spectral power of direct sunlight in the infrared, especially when pulsed.
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| 24. | A "'mercury-vapor lamp "'is a gas discharge lamp that uses an electric arc through vaporized mercury to produce light.
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| 25. | :To'dim'discharge lamps you need to reduce the current through them without going below the striking voltage of the tube.
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| 26. | This effect later became the basis of the gas-discharge lamp, which led to neon lighting and mercury vapor lamps.
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| 27. | High-intensity discharge lamps ( HID)
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| 28. | These lamps are a form of discharge lamp where a small current causes a gas in the tube to glow.
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| 29. | In other conventional gas discharge lamps, the electrodes are the part with the shortest life, limiting the lamp lifespan severely.
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| 30. | Under certain conditions, the accumulated charge ( and hence the potential difference ) is sufficient to trigger a discharge lamp.
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