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A thermometer is a device that measures temperature .A thermometer has two important elements: (1) A temperature sensor (e.g. the bulb of a mercury in-glass thermometer) in which some physical change occurs with temperature. (2) Some means of converting this physical change into a numerical value (e.g. the visible scale that i . . .
A temperature is an objective comparative measurement of hot or cold. It is measured by a thermometer. Several scales and units exist for measuring temperature, the most common being Celsius (denoted °C; formerly called centigrade), Fahrenheit (denoted °F), and Kelvin (denoted K). . . .
Thermal expansion is the tendency of matter to change in shape, area, and volume in response to a change in temperature. Temperature is a monotonic function of the average molecular kinetic energy of a substance. When a substance is heated, the kinetic energy of its molecules increases. When a substance (solid, liquid or gas) is heated , . . .
A solid has a definite shape. When a solid is heated, it expands in all the directions, hence the length, area and volume all increase on a heating a solid.The increase in length of a solid is called the linear expansion. The increase in area is called the superficial expansion and the increase in volume is called the cubical expansion . . .
The telephone and the electric wires when are connected in summer between the two poles, they are kept loose so that they may not break when they contact in winter. on the other hand , if the wires are connected in winter between the two poles, they are kept tight because they will expand in summer and will sag. The wooden wheels of a bullock-cart . . .
The heat produce mainly the following three effects: The change in temperature of the body. The change in size or shape of the body. The change in state of the body. . . .
Like solid, liquid also usually expands liquid on heating. Liquids expand much more than the solid when heated. Liquids do not have a definite shape, but they have a definite volume, therefore liquids have only the cubical expansion. . . .
Gases also expand when they are heated. Gases expand much more than the liquids and the solids. Like liquids, the gases do not have a definite shape, so they also have only the cubical expansion. . . .
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