January 13 in Physics History

Physics history will help you to develop a better understanding of the physics world!

birthdays & deaths

Explore all birthdays & deaths of physicists occurred on this day with their short biography!

physics Events

Know all important discoveries made by physicists & events happened on this day with complete information!

January 13 in Physics History - Births – Physicists born on January 13

John Pringle Nichol (13 Jan 1804 - 19 Sep 1859)

He was a Scottish Astronomer and author who was appointed as a professor of Practical Astronomy at the University of Glasgow. He spent the rest of his life at the university. He wrote several books on science and became a famous lecturer in astronomy. It is said that he inspired a young student named William Thomson who later became the famous Lord Kelvin.

Félix Tisserand (13 Jan 1845 - 20 Oct 1896)

He was a French astronomer who published the updated version of Pierre-Simon Laplace’s work. He installed a wooden telescope the which was 83-cm at the Toulouse Observatory. At that time, he was the director of that observatory. He was able to use the telescope for observing the satellites of Saturn and Jupiter. Later, he became the director of the Paris Observatory. He completed his major works there.

Wilhelm Wien (13 Jan 1864 - 30 Aug 1928)

He was a German physicist who discovered the displacement law of the radiation emitted by the perfect black body. For his discovery, he received the Nobel prize in 1911. He identified a positive particle that was equal in mass to the hydrogen atom during his studies of ionized gas. He laid the foundation of mass spectroscopy. After studying and examining his work, Wein’s particle has named the proton.

January 13 in Physics History - Deaths – Physicists died on January 13

Paul Ulrich Villard (28 Sep 1860 - 13 Jan 1934)

He was a French physicist and chemist who discovered gamma rays in 1900. He was studying the radiations from uranium salts. He found a form of radiation that was penetrating and did not deviate. Two kinds of natural radiations were known at that time- positive alpha particles and negative beta rays. The gamma rays became the third kind having higher energy than x-rays and weak point of ionization. Villard also invented osmoregulatory and wrote Les Rayons Cathodiques.

Alexander Stepanovich Popov (16 Mar 1859 - 13 Jan 1906)

He was a Russian physicist who was the first person to invent a radio receiving device. His work as a teacher at a Russian nav school led him to explore high-frequency electrical phenomena. He presented a paper on a wireless lightning detector on May 7, 1895. This day is celebrated in the Russian Federation as Radio Day.

Jeremiah Horrocks (1618 - 13 Jan 1641)

He was an English astronomer and clergyman who observed the motion of the Moon and Venus using Johannes Kepler’s laws. He proved Landberg’s tables to be incorrect. He predicted a transit of Venus on 24 Nov 1639. It became the first transit to ever be observed.

January 13 in Physics History - Events – Physics Events of January 13

Callisto Was Discovered

The fourth satellite of Jupiter, Callisto was discovered by Galileo Galilei in 1610. Galileo named the moon’s of Jupiter the “Medicean planets” and used numerical as I, II, and III. In the mid-1800s, the names were officially adopted to the moons. It was because the use of numbers to name them was very confusing. New additional moons were discovered one after another. Callisto Is composed of water and ice. Its size is bigger than Mercury.

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