Boyle's law of the gas, and "k" is a constant. The equation states that the product of pressure and volume is a constant for a given mass of confined gas and this holds as long as the temperature is constant. For comparing the same substance under two different sets of conditions, the law can be usefully expressed as The equation shows that, as volume increases, the pressure of the gas decreases in proportion. Similarly, as volume decreases, the pressure of the gas increases. The law was named after chemist and physicist Robert Boyle, who published the original law in 1662. This relationship
The miller who was a wizard, a cheat and a matchmaker The miller who was a wizard, a cheat and a matchmaker The miller who was a wizard, a cheat and a matchmaker (title in Russian "Мельник – колдун, обманщик и сват [Melnik – koldun, obmanshchik i svat]") – is a Russian ballad opera in three acts with a libretto by Alexander Ablesimov that premiered on . Its folksong-based music was long attributed to Yevstigney Fomin but is now considered to have been by Mikhail Sokolovsky, and others have contributed music to revivals. The music for the opera is nowadays agreed to be by Mikhail Sokolovsky, although for a century it