موسوعة العلمـاء و المخترعين .. العلمـاء بالترتيب حسب اسم الشهرة .. الحرف ٦_ك

Encyclopedia of Scientists and Inventors.. Scientists in order according to their nickname.. The letter 6_k

⏹Christie, Samuel Hunter
Christie, Samuel Hunter

English mathematician (1784 - 1865)
Christie studied mathematics at Cambridge and then worked as a professor of mathematics at Walsh.
Christie proposed the possibility of a balance between four electrical resistances, and as a result, the world Wheatstone (1802 to 1914) was able to invent the bridge that bears his name and is used to measure electrical resistances. It is noteworthy that Elsie Christie (W.H.M. Christie) is the cousin of Samuel Christie, and he was a royal astronomer.

⏹ Dirk Coster

Dutch physicist (1889 - 1923)
Kester worked with von Havesy at the Bohr Institute for Theoretical Physics. Kester discovered the element "hafnium" and finally worked as a professor of physics and meteorology in Grottingen.

⏹Kessel, Walther

German physicist (1888 - 1956)
Kessel studied in Heidelberg and then worked as a professor of physics in Kiel, as well as in Danzig. Kessel conducted extensive studies in atomic physics, especially on X-ray spectra, and he developed a physical theory about chemical equivalence. It is worth noting that Walter Kessel is the son of Albrecht Kossel, a functional (physiological) chemist who won the Nobel Prize for Medicine in 1910.

⏹ Cushing, Harvey

American neurologist (1869-1939)
Cushing received his education at Yale, Harvard, and some European institutes, then returned to “America,” where he worked at Hopkins University, and then at Harvard University, where he held the position of professor of surgery. Cushing became famous as a result of the difficult surgeries he performed on the brain, especially with the use of local anesthesia. He also featured important research on the pituitary gland. He wrote a number of books, the most important of which are: The Pituitary Body and its Disorders.
As well as: The Life of Sir William Osler. Cushing won the Pulitzer Prize.

⏹ Unbelievers, Elwa Francis
Kovarik, Alois Francis

American physicist (1880 - )
Kfark studied in Minnesota, and worked as a professor of physics at Yale. He also worked in various academic positions • Kfark conducted studies on radioactivity and atomic physics. He also studied the age of the earth by determining the amount of lead as the final product of radiation in rocks.

⏹ Koffka, Kurt Koffka

German-American psychologist (1886-1941)
Kafka emerged as a professor of psychology at Smith College, and he participated with Wertheimer and Keller in the formation of a school in formal psychology, based on the belief that the mind maintains states or situations as a whole and not as a group of parts. It is analyzed as if it were an integrated system of formations (phenomena) which are not as a whole derivable from the sum of the parts.

⏹ کر, Edward Cocker,

English mathematician (1631 - 1675)
Kikr was a school principal who had a special interest in mathematics, so he wrote a book on arithmetic that became famous as the best book dealing with commercial problems at that time.

⏹ McCroft, Sir John Douglas
Sir Cockroft, John Douglas

English physicist (1897 - )
Cockcroft was educated in Manchester and then in Cambridge, where he became a professor of physics in 1939, then worked as director of the Atomic Energy Research Corporation in the British Ministry of Supply. He participated in supervising the « Air Defense Research Establishment » In addition to that, he held other important positions.
Cockcroft is considered one of the prominent physicists, as he was able, jointly with the physicist Walton, to dismantle the element “lithium” by bombarding it with high-speed protons, for which they designed a special accelerator in which very high direct voltages are used. Therefore, the two scientists devised a high direct voltage generator in which circuits of doubling the voltages were used in succession, known as the “Cockcroft-Walton Generator” or “Cockcroft-Walton Generator” or Voltage Doubler.
Cockcroft did very important research on high-speed protons, which proved to be more efficient in dismantling or destroying elements than alpha rays, and wrote in the period 1930-1935 a number of important reports on high-speed ions. In 1951 Cockcroft was jointly awarded the Nobel Prize for Physics with his colleague Walton ·