Leon Berger. Noted improvements to the guillotine machine were made in 1870 by the assistant executioner and carpenter Leon Berger. Berger added a spring system, which stopped the mouton at the bottom of the groves. He added a lock/blocking device at the lunette and a new release mechanism for the blade.
An observatory is a place for observing, or studying, natural objects and events on Earth or in space. An astronomical observatory is a place to observe space. Scientists use this type of observatory to gather information about stars, planets, comets, and other things outside Earthâs atmosphere.
Astronomy is one of the only fields of study at Hogwarts which has a direct equivalent in the Muggle world. Known student activities include learning the names of stars, constellations, and planets, as well as their location and movements, and describing the environments of planets and moons.