Search results
Results from the WOW.Com Content Network
1838: Matthias Schleiden: all plants are made of cells. 1838: Friedrich Bessel: ... (this was the first confirmed discovery of planets outside the Solar System)
Following this, Louis Pasteur made the first vaccine against rabies, and also made many discoveries in the field of chemistry, including the asymmetry of crystals. In 1847, Hungarian physician Ignác Fülöp Semmelweis dramatically reduced the occurrence of puerperal fever by simply requiring physicians to wash their hands before attending to ...
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
The two discovered a new element in a molybdenum sample that was used in a cyclotron, the first element to be discovered by synthesis. It had been predicted by Mendeleev in 1871 as eka-manganese. [176] [177] [178] In 1952, Paul W. Merrill found its spectral lines in S-type red giants. [179]
The Age of Discovery (c. 1418 – c. 1620), [1] also known as the Age of Exploration, ... Ivanov later made the first chart and description of Baikal. [197]
1847: Ascanio Sobrero invents Nitroglycerin, the first explosive made that was stronger than black powder. 1848: Jonathan J. Couch invents the pneumatic drill. 1848: Linus Yale Sr. invents the first modern pin tumbler lock. 1849: Walter Hunt invents the first repeating rifle to use metallic cartridges (of his own design) and a spring-fed magazine.
Following this discovery, Ramsay, using fractional distillation to separate the components air, discovered several more such gases in 1898: [70] metargon, krypton, neon, and xenon; detailed spectroscopic analysis of the first of these demonstrated it was argon contaminated by a carbon-based impurity. [71]
First telescopic discovery of planet . Great Britain: William Herschel: 1801 First discovery of asteroid . Sicily: Giuseppe Piazzi: 1813 First exposition of the rocket equation based on Newton's third law of motion: Treatise on the Motion of Rockets. UK: William Moore: 1840 First clear telescopic photograph of another world: the Moon. United States