Thursday, May 9, 2013

History of Electricity

Pieter (Petrus) van Musschenbroek (March 14, 1692 - 19 September 1761) is a Dutch scientist. Born in Leiden, the Netherlands, from the family home appliances maker. His father was Johann Joosten Van Musschenbroek that when Peter (Pieters) birth parents always make the tools of physics (air pumps, microscopes, and telescopes). That's why small Musschenbroek liked science. Pieter van Musschenbroek attended Latin school until 1708, where he studied Greek, Latin, French, English, High German, Italian and Spanish. He studied at the University of Leiden (Leiden) and obtained his medical degree in 1715 and he earned a doctoral degree (Ph.D.) in the field of pure science (physics) with a dissertation entitled "De Aeris Presentia in Humoribus Animalum".

He also attended lectures by John Theophilus Desaguliers and Isaac Newton in London. He completed studies in philosophy in 1719. After that, he visited London, England in 1717 following his professor Desagilier and met with Isaac Newton. Pieter completed his studies in physics in 1719. Upon his return to the Netherlands, from 1719 until 1723 Pieter continued his studies and obtained a degree in Mathematics and a professor of Physics at Dursberg (Germany), when he worked with fahrenheit. He earned a great teacher in the field of science and mathematics from the University of Duesberg (Duisburg) in 1719. Musschenbroek Newton developed the ideas in the Netherlands. He was appointed professor (from 1721) at the University of Duesberg, Utrecht and Leiden (from years 1740-1761).

Musschenbroek is a professor in Duisburg, Utrecht, and Leiden, where he held positions in mathematics, philosophy, medicine and astrology. In 1719, he became professor of mathematics and philosophy at the University of Duisburg. In 1721, he also became a professor of medicine. At 1723, he left the post in Duisburg and a professor at the University of Utrecht. In 1732 he also became a professor in astrology. Musschenbroek the Elementa Physica (1726) plays an important role in the transmission of ideas Isaac Newton in physics to Europe. On November 1734 he was elected a Fellow of the Royal Society. In 1739, he returned to Leiden, where he succeeded Jacobus Wittichius as a teacher.

Already during my studies at the University of Leiden Van Musschenbroek be interested in electrostatics. At that time, transient electrical energy can be generated by the engine friction but there is no way to save it. Andreas and his Musschenbroek Cunaeus find that the energy can be stored, which is also involved in the work of Jean-Nicolas-Sébastien Allamand as collaborators. Equipment is a glass bottle filled with water in which the brass rod has been placed;. And the stored energy can be released only by completing an external circuit between the brass rods and other conductors, first hand, placed in contact with the outside of the tube.

Van Musschenbroek communicated this discovery to René Réaumur in January 1746, and the Abbé Nollet, translator Musschenbroek letter from Latin, called the discovery of the 'Leyden jar'. Soon after, it was revealed that a German scientist, Ewald von Kleist, has independently built a. similar device in 1745's, just before Musschenbroek. In 1754, he became an honorary professor at the Imperial Academy of Science in Saint Petersburg. He was also elected as a foreign member of the Royal Swedish Academy of Sciences in 1747. Van Musschenbroek died on 19 September 1761 in Leiden.

In 1721, Pieter also earned an associate professor in the medical field. On July 16, 1724, was married to Pieter Van de Water Andriana. Then in 1738 Pieter remarried to Helena Alstorphius. He managed to develop their knowledge in science (physics) at the University of Utrecht and Leiden University. He is the person who first developed the scientific research on electric power tools and equipment. At 1729, he was a leading physicist from other experts.

Musschenbroek also one of the first scientists (1729) to provide a detailed description of the testing machines for tension, compression, and flexure testing. An early example of a problem in dynamic plasticity described in the 1739 paper (in the form of penetration with a stick of butter affected by wood ball). He is credited with the invention of the first capacitor in 1746: the Leyden jar. He did pioneering work in the buckling of struts compressed.

Electrical experiments are very popular around 1770 after the discovery of a jar of Leiden in 1745 by Pieter van Musschenbroek. Pieter contributed in the study of magnetism and cohesion objects. In addition, Pieter also found a high temperature gauges (pyrometer). During his life, pieter do more experiments and found many useful tools in the advancement of science and technology. Pieter died on 19 September 1761 and was buried in the cemetery where his second wife Helena Alstorphius buried.

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