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June 7 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!

June 7 in Physics History - Births – Physicists born on June 7

Charles Barkla (7 Jun 1877 - 23 Oct 1944)

He was an English physicist who worked on x-ray scattering. For his work, he was awarded the Nobel Prize for Physics in 1917. His techniques are used to investigate the atomic structures. He also showed that the scattering of X-rays by a gas depends on the molecular weight of the gas in 1903. His experiments showed that X-rays are electromagnetic radiation just like light. Later he also discovered that each element has its own x-ray spectrum.

Bernard F. Burke (7 June 1928 - 5 August 2018)

He was an American astronomer who, by chance, found a radio signal that resembled a short burst of static similar to interference by lightning on home radios. After studying the period of the signal, they pinpointed Jupiter as the source. This was the first time that radio sound was detected from a planet in our solar system. Later it was shown that the radio where polarized involving a magnetic field.

John Sealy Edward Townsend (7 Jun 1868 - 16 Feb 1957)

He was a British physicist who was the first to study the electrical conduction in gases. He was the first to measure the unit of electrical charge directly in 1898. He developed the falling drop method for measuring e. For this, he used saturated clouds of charged water droplets. He was also the first to explain how electric discharges pass through gases.

June 7 in Physics History - Deaths – Physicists died on June 7

Joseph von Fraunhofer (6 Mar 1787 - 7 Jun 1826)

He was a German physicist who first studied the dark lines in the solar spectrum, which were seen by Wollaston in 1802. He measured 576 lines but could not explain them. These are caused by the selective absorption of those wavelengths by atoms of elements. He used a diffraction grating instead of a prism to disperse the spectrum. He also invented a heliometer.

Alexis Bouvard (27 Jun 1767 - 7 Jun 1843)

He was a French astronomer who was also the director of the Paris Observatory. He discovered eight comets and wrote table astronomiques of Jupiter and Saturn. His table predicted accurately the orbital locations of Jupiter and Saturn. His tables for Uranus failed that led him to hypothesize that an unknown perturbing body is causing the irregularities. This led to the discovery of Neptune.

Karl Kelchner Darrow (26 Nov 1891 - 7 Jun 1982)

He was an American physicist who later became a science writer. His writings included critical reviews, encyclopedia entries, and 4 science books. He could interpret physics with clarity whether to a gathering of the scientist or wider intellectual audiences. He gave many lectures at the Lowell institute in 1935. He was invited by four universities at different times as a visiting professor.

June 7 in Physics History - Events – Physics Events of June 7

European Nuclear Laboratory

A European Nuclear Physics laboratory was proposed by Nobel Prize winner, Isidor I. Rabi in 1950. The US was represented by him at the 5th General Conference.

April 12 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!

April 12 in Physics History - Births – Physicists born on April 12

Edward Walter Maunder (12 Apr 1851 - 21 Mar 1928)

He was an English astronomer who first started the British Civil Services Commission examination for the post of photographic and spectroscopic assistant at the Royal Observatory, Greenwich. He worked at the observatory for the next forty years measuring the sunspots and checking historic records. He found a lack of reports on sunspots from 1645 to 1715. Instead of questioning this, he started researching and found that there are indeed decades-long times when the sun has very few sunspots. Now we call these periods as Maunder minima.

Ferdinand von Lindemann (12 Apr 1852 - 6 Mar 1939)

He was a German mathematician who proved that π is not a solution to any algebraic equation with a rational coefficient. This explained the insoluble natural or classical Greek mathematical problem of constructing a square with the same area as a given circle using a ruler and compasses alone. He discussed Hermite’s methods that he used to prove that ‘e’ is transcendental. He extended Hermite’s results in 1882 to show that π was also transcendental.

April 12 in Physics History - Deaths – Physicists died on April 12

Charles Messier (26 Jun 1730 - 12 Apr 1817)

He was a French astronomer who first compiled a systematic catalog of “M objects” and discovered 15 comets. His catalog contained nebulae, 103-star clusters, and galaxies. He concluded the alphanumeric names for objects like M1, M2, etc.

Geoffrey F. Chew (5 Jun 1924 - 12 Apr 2019)

He was an American physicist who led the group of S-matrix theorists researching the strong interaction and the bootstrap principle. He was a graduate student of Enrico Fermi. His group calculated the interactions of bound-states without assuming that there is a point-particle field theory underneath.

Igor Tamm (8 Jul 1895 - 12 Apr 1971)

He was a Soviet physicist who shared the Noble Prize with Pavel A  Cherenkov, and Ilya M. Frank for physics for his works in explaining Cherenkov radiation. He developed the theoretical interpretation of the Cherenkov effect which states that the radiation of electrons moves faster than the speed of light through matter. He also developed a method for studying the interaction of nuclear particles and contributed towards the methods for the control of thermonuclear reactions.

April 12 in Physics History - Events – Physics Events of April 12

First Man To Orbit The Earth

On this day, Yuri Gagarin became the first man to orbit the Earth in 1961. The control of the spacecraft was locked to prevent him from taking control of the ship. It had a radio, television, and life-supporting equipment. He ejected and made a planned descent landing with his parachute but the Soviet Union denied this to save its reputation. After 7 years, he died in a plane crash.

The First Yo-Yo Toy In Space

The first yo-yo toy was taken into space in the Space Shuttle Discovery mission 51-D in 1985. With this yellow plastic Duncan Imperial yo-yo, other toys were exhibited during a time in orbit. Astronauts did the tricks with toys but the yo-yo sleeper trick couldn’t work without normal gravity. While spinning, the gyroscope showed exceptional stability. The flywheel slowed without normal gravity.

Space Shuttle Columbia Was Launched

Columbia, the American Space Shuttle was launched into space in 1981. John W. Young was the mission commander.