موسوعة العلمـاء و المخترعين .. العلمـاء بالترتيب حسب اسم الشهرة .. الحرف ه

Encyclopedia of Scientists and Inventors.. Scientists in order according to their nickname.. the letter H

⏹ Haber, Fritz Haber, Fritz

German chemist ( 1868 - 1934 )
Haber was educated in Berlin and Heidelberg, then taught chemistry in Karlsruhe and then in Berlin. Haber's fame was based on his studies of the synthesis of ammonia from hydrogen and nitrogen in the presence of a catalyst at 500 ° C and high pressure.
He is also known for his work on electrochemical problems.
Haber was awarded the Nobel Prize in Chemistry in 1918.

⏹ Hattchett Charles

English chemist (1765 - 1847)
Hatchet became famous as an outstanding chemical analyst. Besides, he was a capable manufacturer, as well as a researcher in chemical problems. Selected as a Fellow of the Royal Society, Hatchet discovered the element columbium, (or niobium) in a mineral now called columbite, and for many years the British Museum kept the very specimen on which he had made his analysis.
That Hatchet retired from scientific research at a relatively early age and engaged in self-employment was a great loss for chemistry.

⏹ Harden, Sir Arthur Harden, Sir Arthur

English chemist (1865 - 1940)
Chardin learned in Manchester and Erlangen, then returned to Manchester as a lecturer in chemistry.
. Then he went to London and to the Lister Institute as a professor of biochemistry - he was chosen as a Fellow of the Royal Society. Harden, together with Cheplin, won the Nobel Prize for Chemistry in 1929 for his research on “enzymes” and alcoholic fermentation. Seven years later (1936), he was awarded the title of "Knight Sir".

⏹ Hardy, Ulster Clay Fering
Hardy, Alister Clavering

English biologist (1896-)
Hardy learned at Oxford and then worked as a professor of natural history in Aberdeen, so he was a professor of zoology and comparative anatomy at Oxford. He was an authority on oceanography.
Hardy invented an automatic device to study planktons, (marine wandering organisms) quantitatively and qualitatively, in the field of his study of plant life in the sea. He also studied the living and nutritional conditions of fish, herring.

⏹ Harrison, Ross Granville
Ross Granville Harrison

American biologist (1870-1959)
Harrison learned at Hopkins University, then worked there as a professor of anatomy, and after he turned around a number of scientific positions, he was appointed professor of biology (biology) at Yale University in 1927 · His studies of biology have brought him international fame.
In 1907, Harrison discovered a new method for studying cells, known as the hanging-drop culture method, at a time when this method enabled him to keep pieces of living tissue, performing their full functional tasks, which enabled him to observe them as they multiply (see French biologist Carrel).
Harrison's study of the regeneration of peripheral organs and the function of the nervous system in the differentiation of embryonic muscles, were all of great importance and confidence.

⏹ Harvey, Sir William
Harvey, Sir William

English physician (1578 - 1657)
Harvey learned in London and Padua in Italy, where he was apprenticed by two of the most famous scientists, Fabricius and Galileo • Then he worked as a physician at St. Bartholomew's Hospital in London. He also lectured at the College of Physicians. Harvey is famous for his discovery of the right blood circulation. (See Servetus from 1511 to 1553) and this was published in 1628 in his book: Exercitatis Anatomica de Motu Cordis et - Sanguinis in Animalibus.
The studies of previous doctors had referred to the arterial circulation of blood, but they did not explain how the blood returns to the heart if they viewed the blood circulation as more like the irrigation process.
Harvey worked as a physician to King James I and Charles I. When the parliamentarians seized the reins of government, Harvey had to retire from public life.