موسوعة العلمـاء و المخترعين .. العلمـاء بالترتيب حسب اسم الشهرة .. الحرف ١٥_ك

Encyclopedia of Scientists and Inventors.. Scientists in order according to their nickname.. The letter 15_k

Kater, Henry

English physicist (1777-1835).
Ketter is of German descent. At the beginning of his youth, he was interested in law, then he joined the army. During his work in the military survey, he designed and improved a kind of “pendulum” that bears the name Ketter.
Ketter was chosen as a Fellow of the Royal Society and made very important improvements to the measuring instruments, thus obtaining the Copley Medal • The result of Ketter's accurate determination of the length of the dance seconds was an increase in the accuracy of the standards in the British system of weights and measures.

⏹ Keith, Sir Arthur " Keith

Scottish anthropologist (1866-1955)
Educated Keith in Aberdeen, London and Leipzig. Then he worked as a professor at the Royal College of Surgeons, and he also worked at the Royal Institute. Keith was chosen as a Fellow of the Royal Society and chaired the British Society and chaired the University of Aberdeen • Keith made many discoveries in embryology and anatomy related to the early development of man and the fossilized remains of ancient man, thus enabling him to make important modifications to Darwin's theory of evolution in the evolution of human ancestors, so the Keith is considered one of the most prominent practitioners in the study of human science (anthropology) · Keith has authored a number of books, perhaps the most prominent of which are: Human Embryology and Morphology and the book: A New Theory of Evolution.

⏹ Kerr, John Kerr,

Scottish physicist (1842 - 1907) ·
Kerr began studying theology in Glasgow and then worked as a mathematics lecturer at a training college. Kerr was chosen as a Fellow of the Royal Society, and through his research he discovered the magnetic-optical effect called the Kerr effect.
It is related to the rotation of the plane of polarization of light passing through a magnetic field during its reflection from a polished (reflective) magnetic pole.

Kirchhoff Gustav Robert
Kirchhoff, Gustav Robert

German physicist (1824 - 1887)
Worked as a teacher in both Heidelberg and Berlin - He participated with Bunsen in the development of the spectroscope and in the discovery of the elements cesium and rubidium.
In the field of electrical engineering, he has influenced the formulation of the basic laws of electrical circuits, which are known as Kirchhoff's laws. In addition, he has important research in thermodynamics, and among his famous books is “Research in the Solar Spectrum.”

⏹ Kirwan, Richard Kirwan Richard

Irish chemist (1733 - 1812)
Kirwan learned in French institutes and worked in chemistry, and he was the first to point out that a gas other than hydrogen is the same as phlogiston.
Kirwan studied the union of certain amounts of acids and bases. He was the first to study the properties of strontia (4 SrSO).
He won the Copley Medal and was elected a Fellow of the Royal Society.

Kizum, Wilhelmus Hendrickus
Keesom, Wilhelmus Hendrikus

Dutch physicist (1876-1956)
Kizum studied in Amsterdam and then worked as a professor of physics in Leiden • Kizum worked in the Kamerlingh Onnes laboratories in Leiden and was able to freeze helium gas at 2.2 absolute degrees and a pressure of atmospheric pressure. Helium was the last of the gases that showed a high resistance to freezing.

⏹ Kifiyah, Georges Leopol Chrétien Frederic de Goubert, Baron
Cuvier, Georges Léopold Chrétien Frédéric Dagobert, Baron.

French Naturalist ( 1769 - 1832 )
Kevier received some of his education in Stuttgart, Germany, then devoted his time to the study of zoology • and after that he worked as a professor of natural history at the College de France • Kevier was famous for his excellent classification of worms as he prepared an integrated division of the animal kingdom, and he carried out advanced studies in comparative anatomy and he showed how He was very interested in the remains of ancient vessels (fossils, fossils, or fossils), and he was the first to know and name the remains of the “pterodactyl” if it had two winged fingers. The study of fossil remains has developed into an independent science known as “neology”.
A preliminary picture of the natural history of animals (Tableau Élémentaire de L'Histoire Naturelle des Animaux 1798).

And: lessons in comparative anatomy; (Leçons d'Anatomie Comparée 1800-05).

And the natural history of fish, (Histoire Naturelle des Poissons).