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Temperature is a physical quantity that indicates hotness or coldness, measured with a thermometer and reflecting the average kinetic energy of atoms. Common temperature scales include Celsius, Fahrenheit, and Kelvin, with Kelvin being used for scientific purposes. Absolute zero, or zero kelvin, is the lowest temperature achievable, and temperature plays a crucial role in various fields of natural science and daily life.

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23 views1 page

Monsoon

Temperature is a physical quantity that indicates hotness or coldness, measured with a thermometer and reflecting the average kinetic energy of atoms. Common temperature scales include Celsius, Fahrenheit, and Kelvin, with Kelvin being used for scientific purposes. Absolute zero, or zero kelvin, is the lowest temperature achievable, and temperature plays a crucial role in various fields of natural science and daily life.

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Temperature is a physical quantity that quantitatively expresses the attribute of hotness

or coldness. Temperature is measured with a thermometer. It reflects the average kinetic


energy of the vibrating and colliding atoms making up a substance.

Thermometers are calibrated in various temperature scales that historically have relied on
various reference points and thermometric substances for definition. The most common
scales are the Celsius scale with the unit symbol °C (formerly called centigrade),
the Fahrenheit scale (°F), and the Kelvin scale (K), with the third being used predominantly
for scientific purposes. The kelvin is one of the seven base units in the International System
of Units (SI).

Absolute zero, i.e., zero kelvin or −273.15 °C, is the lowest point in the thermodynamic
temperature scale. Experimentally, it can be approached very closely but not actually
reached, as recognized in the third law of thermodynamics. It would be impossible to extract
energy as heat from a body at that temperature.

Temperature is important in all fields of natural science, including physics, chemistry, Earth
science, astronomy, medicine, biology, ecology, material science, metallurgy, mechanical
engineering and geography as well as most aspects of daily life.

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