Definition

1. Noun:
   • (Physics) Charles's Law: The scientific principle stating that, for a fixed mass of an ideal gas held at a constant pressure, its volume is directly proportional to its absolute temperature. This means if the temperature increases, the volume increases proportionally, and vice versa.

Usage

• The law of volumes is a fundamental concept in thermodynamics and gas chemistry.
• It is used to predict and calculate how a gas will expand when heated or contract when cooled, provided the pressure does not change.
• This law is often introduced alongside Boyle's law to describe the behavior of ideal gases.

Examples

• Noun:
  • According to the law of volumes, a hot air balloon rises because the air inside expands when heated.
  • Engineers must account for the law of volumes when designing sealed systems that may experience temperature fluctuations.
  • The experiment demonstrated the law of volumes by showing the linear relationship between the temperature and volume of the trapped gas.

Advanced Usage

• The law of volumes is mathematically expressed as V/T = k, where V is volume, T is absolute temperature (in Kelvins), and k is a constant.
• It is also commonly known as Charles's law, named after the scientist Jacques Charles.
• This law, combined with Boyle's law and Gay-Lussac's law, leads to the combined gas law and ultimately the ideal gas law.

Variants and Related Words

• Charles's law: The more common name for the law of volumes.
• Ideal gas law: The more comprehensive equation (PV = nRT) that describes the state of an ideal gas, incorporating the relationships described by Charles's, Boyle's, and Avogadro's laws.
• Boyle's law: The principle that the pressure and volume of a gas are inversely proportional at constant temperature.

Synonyms

• Charles's law

Noun

1. (physics) the density of an ideal gas at constant pressure varies inversely with the temperature