Thermometer

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The first thermometer was invented by Galileo Galilei. It was first called a thermoscope. It was later improved by Daniel Fahrenheit, who discovered that using mercury works better than water. The thermometer is important because it is used to measure temperature. Measuring temperature is important because it can tell you how hot or cold something is or has to be. For example, if you leave the stove on too hot, without measuring how hot it is going to be, your house could catch fire, or your food might burn.

The mercury or the alcohol in the thermometer moves up or down according to the heat. If it moves up, the temperature is higher, and if it moves down, the temperature is lower. A thermometer can have different scales like Fahrenheit, Celsius, and Rankine. Kelvin and Rankine are actually only used by scientists, and the scales start at absolute zero (-460 degrees Fahrenheit).

One type of thermometer is a mercury thermometer, also known as the ordinary thermometer. A thermometer that is used to measure people's body temperature is called a medical thermometer. On the walls of buildings, a thermostat or digital thermometer is used to measure the temperature of the air outside.

Thermometers are a useful part of everyday life because you can use them to measure your body temperature when you are sick, check how hot or cold the room is, and, based on that, turn on the heater or air conditioner. They can also be used to measure the temperature of food and check the weather forecast to dress appropriately.

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