Posted in Discoveries, Inventions
21/10/2018

From laughing gas to miner’s lamp

Sir Humphrey Davy, Bt PRS MRIA FGS FRS, was an extremely talented chemist, poet and inventor. Born in Cornwall in 1778 and employed in Bristol at the Pneumatic Institution, he first became known for his experiments with nitrous oxide, or ‘laughing gas’, by breathing it in himself. His friends tried it, too! Later, it would start to be used as an anaesthetic in dentistry.

Davy then moved to London in 1801 and succeeded in isolating the elements of sodium, potassium, magnesium, chlorine and iodine, among others, using the newly discovered process of electrolysis. He was also admired as a lecturer and was Professor of Chemistry from 1802 to 1812 at the Royal Institution.

Image of the Davy lamp: The National Coal Mining Museum for England

In 1816, he produced a miner’s safety lamp which reduced the danger of explosions caused by naked flames in coal mines. This lamp is known as the ‘Davy lamp’.