Newton's Law of Cooling
The rate at which an object cools is proportional to the temperature difference between the object and its surroundings.
Formula
Variables
Example
Hot coffee cools rapidly at first, then more slowly as it nears room temperature.
Did You Know?
Forensic scientists use this law to estimate time of death from body temperature.
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More in Scientific Laws & Principles
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BasicIn a closed system, matter is neither created nor destroyed — the total mass before a reaction equals the total mass after.
Law of Definite Proportions
BasicA given chemical compound always contains its component elements in the same fixed ratio by mass, regardless of source.
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Avogadro's Law
BasicAt the same temperature and pressure, equal volumes of gases contain equal numbers of molecules — so volume is proportional to moles.