Nitrous oxide Nitrous oxide Nitrous oxide, commonly known as laughing gas or nitrous, is a chemical compound, an oxide of nitrogen with the formula . At room temperature, it is a colourless non-flammable gas, with a slight metallic scent and taste. At elevated temperatures, nitrous oxide is a powerful oxidizer similar to molecular oxygen. It is soluble in water. Nitrous oxide has significant medical uses, especially in surgery and dentistry, for its anaesthetic and pain reducing effects. Its name "laughing gas", coined by Humphry Davy, is due to the euphoric effects upon inhaling it, a property that has led to its recreational
The Laughing Cavalier (novel) the memory of him which is so alive here in Haarlem-- that I am indebted for the true history of his life, and therefore I feel that but little apology is needed for placing the true facts before all those who have known him hitherto only by his picture, who have loved him only for what they guessed." "The monograph which I now present with but few additions of minor details, goes to prove what I myself had known long ago, namely, that the Laughing Cavalier who sat to Frans Hal for his portrait in 1624 was the direct ancestor