Gas laws 1662 Robert Boyle studied the relationship between volume and pressure of a gas of fixed amount at constant temperature. He observed that volume of a given mass of a gas is inversely proportional to its pressure at a constant temperature. Boyle's law, published in 1662, states that, at constant temperature, the product of the pressure and volume of a given mass of an ideal gas in a closed system is always constant. It can be verified experimentally using a pressure gauge and a variable volume container. It can also be derived from the kinetic theory of gases: if a container,
The Man Who Was Thursday in Latin, and a title given to Jesus. (Usually a title given to the Virgin Mary.) "The Man Who Was Thursday" inspired the Irish Republican politician Michael Collins with the idea "if you didn't seem to be hiding nobody hunted you out". Martin Gardner edited "The Annotated Thursday", which provides a great deal of biographical and contextual information in the form of footnotes, along with the text of the book, original reviews from the time of the book's first publication and comments made by Chesterton on the book. A less thorough annotation was done for the edition of the novel