A thermometer is a device which measures temperature or temperature gradient, using a variety of different principles. The word thermometer is derived from two smaller word fragments: thermo from the Greek for heat and meter from Greek, meaning to measure.
Mercury, unlike water, does not expand upon solidification and will not break the glass tube. This is why it was chosen...
Today mercury thermometers are still widely used in meteorology, however in other usage they are becoming increasingly rare, as many countries have banned them outright from medical use. Some manufacturers use a liquid alloy of gallium, indium, and tin, galinstan, as mercury replacement.
2007-01-28 16:53:56
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answer #1
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answered by Anonymous
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Mercury expands lots with a small substitute in temperature, that's what makes it straight forward to degree the substitute in temperature. no person desires to objective to verify marks that are too close at the same time. the quantity variations are very consistent alongside the temperature variety, that's why the marks on the thermometer are the comparable distance from one yet another. Mercury additionally does not stick to glass, in any different case there could be smears from the action picture of mercury on the glass, and the thermometer could be demanding to verify. it is likewise a coloured, not clean, liquid: straight forward to work out.
2016-12-17 04:51:04
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answer #2
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answered by nehls 3
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Some thermometers use dyed alchohol. Some use a speific gravity liquid and little balls the sink or rise as the temp changes. some use bi-metallic elements that bend as the temp changes.
So, it's NOT just mercury. Best of luck.
2007-01-28 16:42:42
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answer #3
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answered by Dorothy and Toto 5
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Because it is the only metal which is liquid at normal temperatures on Earth.
2007-01-28 16:42:49
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answer #4
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answered by CLICKHEREx 5
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its a fun prank
2007-01-28 16:41:59
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answer #5
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answered by moocow1088 2
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