really a song – realsong lyrics
helium: it is used for filling balloons and deep diving. it can also be used as gas tungsten arc welding.
neon: it is mainly used in neon signs for illumination. it can be used in vacuum tubes, high-voltage indicators, television tubes, and so on.
argon: it is often used for filling incandescent lights. for semi-conductor industries, the crystals are produced in argon gas, it is inert to prevent the crystals from oxidiziong by air.
krypton: it sometimes mixed with argon as the fill gas of energy saving fluorescent lamps. the main use of krypton is the photographic flashes.
xenon: some photographic flashes and stroboscopic lamps are filled with xenon as the flash lamps. it is also used in some lamps and nuclear reator.
radon: it is always used in radiotherapy. for scientific uses, radon can be used to track air m-ss to a limited degree.
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