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heat
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Explore heat transfer and know the difference between heat and temperature
For Students
heat summary
Quizzes
Electric power lines against sunset (grid, power, wires, electrical, electricity)
Energy & Fossil Fuels
Italian physicist Guglielmo Marconi at work in the wireless room of his yacht Electra, c. 1920.
All About Physics Quiz
Read Next
Muscle injury. Man with sprain thigh muscles. Athlete in sports shorts clutching his thigh muscles after pulling or straining them while jogging on the beach.
Why Does Heat Relax Your Muscles?
Discover
Vincent Van Gogh, Self Portrait. Oil on canvas, 1887.
Rediscovered Artists: 6 Big Names That Time Almost Forgot
The Lost Colony of Roanoke, North Carolina, where 115 people mysteriously disappeared c. 1590. John White discovers the word Croatoan carved onto a tree upon his return to the deserted Roanoke Colony in 1590
The Lost Colony of Roanoke
United States electoral college map showing number of electoral votes by state.
How Does the Electoral College Work?
An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.
11 Egyptian Gods and Goddesses
New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.
Why Is It Called Black Friday?
halloween, jack o lantern, pumpkin, gourd
Why Do We Carve Pumpkins at Halloween?
King Cobra snake in Malaysia. (reptile)
9 of the World’s Deadliest Snakes

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News •

Heat Today: Miami eyes Charlotte after offense fizzles in opening-night loss to Magic • Oct. 24, 2024, 9:07 AM ET (New York Times)
IMD Warns of Rising Temperatures as 'October Heat' Looms Over Mumbai; Here's How to Stay Safe • Oct. 5, 2024, 9:58 AM ET (The Weather Channel)

heat, energy that is transferred from one body to another as the result of a difference in temperature. If two bodies at different temperatures are brought together, energy is transferred—i.e., heat flows—from the hotter body to the colder. The effect of this transfer of energy usually, but not always, is an increase in the temperature of the colder body and a decrease in the temperature of the hotter body. A substance may absorb heat without an increase in temperature by changing from one physical state (or phase) to another, as from a solid to a liquid (melting), from a solid ...(100 of 1065 words)

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