In 1770 a Scottish physician and Chemist Daniel Rutherford performed a simple experiment with which he discovered nitrogen. Rutherford being with an empty bottle that he turned upside down in a pan of water so that the air was trapped. A buring candle was placed inside the bottle with the trapped air causing the water to rise a bit. The part of the air that seemed to "disappear" when the candle was bured was oxygen gas and the part of the air that did not "disappear" Ruthford discovered Nitrogen.
Nitrogen was discovered by Daniel Rutherford in 1772 through experiments that isolated this gas from the air after burning oxygen. He initially referred to it as 'noxious air.' Other scientists like Joseph Priestley and Henry Cavendish also contributed to understanding nitrogen around the same time.
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