- When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be directly related.
- It was first published by French natural philosopher Joseph Louis Gay-Lussac in 1802, although he credited the discovery to unpublished work from the 1780s by Jacques Charles. The law was independently discovered by British natural philosopher John Dalton by 1801, although Dalton's description was less thorough than Gay-Lussac's. The basic principles had already been described a century earlier by Guillaume Amontons.
Real World Example - 1. When a balloon is filled with helium and is normal one day, then the next day, it shrinks because it's cold.