April 1 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 1 in Physics History - Births – Physicists born on April 1
Claude Cohen-Tannoudji (Born On 1 April 1933)
He is a French physicist who developed methods to cool gases to micro-kelvin temperature range with the help of laser light. For that, he shared the Nobel Prize for Physics in 1997 with William D. Phillips and Steven Chu. He attained a temperature of 0.18 micro Kelvin working with helium and using six laser beams. The speed of helium atoms is reduced to only about 2cm/s under these conditions.
April 1 in Physics History - Deaths – Physicists died on April 1
Pyotr Nikolayevich Lebedev (8 Mar 1866 - 1 Apr 1912)
He was a Russian physicist who proved that light exerts a minute pressure on bodies in experiments with William Crookes’ radiometer. It was earlier predicted by James Clerk Maxwell’s theory of electromagnetism. His theory explained why a comet’s tail points away from the Sun. He also built an extremely small vibrator source that was capable of generating 4-6 mm waves, that he used to express the first observation of double refraction of electromagnetic waves.
Lev Davidovich Landau (22 Jan 1908 - 1 Apr 1968)
He was a Soviet physicist who was awarded the Noble prize for physics in 1962 for his theory to explain the peculiar superfluid behavior of liquid helium at 2.18 K. He worked in the fields of atomic and nuclear physics, solid states, plasma physics, and low-temperature physics. Several physics terms bear his names such as Landau energy spectrum, Landau levels, or Landau diamagnetism.
April 1 in Physics History - Events – Physics Events on April 1
The First Weather Satellite
Tiros I, the first weather observation satellite was launched from Cape Kennedy in 1960. It was NASA’s first experimental step to observe the use of satellites in the study of Earth. Various design issues for spacecraft were tested to check the effectiveness of satellites. TIROS proved successful for weather forecasting.
