What is a thermometer? types and uses with diagrm
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thermometer is an instrument which is used to measure temprature of an object or a body..
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Thermometer is the device which is used to measure the temperature of a body.”Some substances have the property that changes with temperature.Substances that show a change in temperature can be used as a thermometric material.For example, some substances expand on heating, some change their colours, some change their electric resistance, etc.Nearly all the substances expand on heating.Liquids also expand on heating and are suitable as thermometric materials.Common thermometers are generally made using some suitable liquid as thermometric material.
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