موسوعة العلمـاء و المخترعين .. العلمـاء بالترتيب حسب اسم الشهرة .. الحرف ٢_ر

Encyclopedia of Scientists and Inventors.. Scientists in order according to their nickname.. The letter 2_r

⏹ Ruzicka, Leopold

Swiss chemist of Yugoslav origin (-1887)
Roszka was born in Yugoslavia, and in his youth he taught chemistry in Utrecht (Utrecht in the Lowlands and then in Zurich, and he was the first to prepare musk synthetically). He has important works in the study of polymethylene and other organic materials. The Nobel Prize in Chemistry jointly with Butenand.
Roszczka invented a special chemical method for making hormones.

⏹ Rossi, Bruno ⏹ Rossi Bruno

Italian-American physicist (1905-)
He learned Russian in Padua and Bologna (Bunonia), then worked in Florence, Padua and Manchester, then became a professor of physics at Cornell University • He focused an essential part of his interest in the study of cosmic rays.
Rossi invented a circuit named after him in order to record the matches between the Geiger-Maller counters. He was the first to measure the absorption curves of lead and other substances.

Rossi found that cosmic rays cause displacement (ionization) and that what displacement does not occur from these rays are just photons (quanta of light). Rossi also conducted experimental studies on the decay and mesons, using a telescopic meson counter.

⏹ Romier, Rene Antoine Vercholl D
Réaumur René Antoine Ferchault de

French entomologist and inventor (1683-1757)
Romer trained in one of the Jesuit schools, then in Paris. He was wide in the aspects of the study, he invented the well-known scientific thermometer.
In his name: the Romer scale, and it differs from the percentage scale in that the boiling of water in it is at a point of eighty Romer degrees.
He studied many aquatic and terrestrial animals and insects, especially with regard to the effects of temperature on them, the environment, artificial infection, and so on.

⏹ Roemer, Olaus Roemer Olaus

Danish astronomer (1644-1710)
Roemer was apprenticed to Bartholinos. Then he taught in Dauphin and Paris, then taught astronomy in Copenhagen.
He introduced the use of micrometers and reading microscopes to astronomical observatories, and he obtained the first reliable experience about the speed of light, by observing the eclipse of one of the satellites of the planet “Jupiter”.

Röntgen, Wilhelm Conrad
Rontgen, Wilhelm Konrad

German physicist (1923 - 1845)
. Röntgen studied in the Netherlands and Switzerland, then worked in teaching physics. He discovered X-rays (X-rays) in 1895, important research in the physics of light, crystals, gases, and the property of elasticity.
His research and scientific discoveries played a major role in solving many chemical issues, and Roentgen was awarded the Nobel Prize for Physics.
The coil (inductor) used by Röntgen to generate high voltage during his discovery of X-rays in 1895.
The tubes in which Röntgen discovered x-rays (X-rays).

⏹ Reimann, Georg Friedrich Bernhard
Riemann, Georg Friedrich Bernhard

German mathematician (1826 - 1866) ·
Riemann received his studies in Hanover, Lüneburg, Göttingen and Berlin. In 1857 he became a professor at Göttingen, but his ill health caused several interruptions in his life.
Riemann is considered one of the brilliant mathematical thinkers, and he is best known for developing a non-Euclidean geometric system known as the “Riemann system.” He published it in 1867 and described it in his famous lecture, On Hypotheses That Form the Basis of Geometry.
Riemann contributed to the development and deepening of Boyai and Lobachevsky's views on the concepts of multidimensional space and measures of curvature.
Riemann introduced the idea of ​​a definite unrestricted space, as he contributed significantly to the theory of functions with complex variables, as well as the theory of possibility.