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

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

⏹ Meyer, Julius Robert von
Mayer, Julius Robert Von

German physicist (1814 - 1878)
Mayer studied medicine in Tibingen and worked as a physician for some time. He was famous for his discovery of the principle of conservation of energy, which is the first law of thermodynamics. Meyer suffered from denial and family misfortunes that led him to attempt suicide. He suffered from a mental disorder, from which he was partially cured. Mayer succeeded in explaining a number of phenomena and failed to explain others, and he relied in his analyzes on the law of energy conservation referred to above.

⏹ May, William James
Mayo. William James

American surgeon (1861 - 1939)

Mayo studied in Michigan and Dublin and then practiced surgical medicine in Minnesota. He participated with his brother, Chara Horse, in establishing a clinic called Mayo • William James Mayo was a specialist in stomach surgery.

⏹ Michaelson, Albert Abraham
Michelson, Albert Abraham

American physicist (1852 - 1931)
Michaelson was educated at the US Naval Academy and in Berlin, Heidelberg, and Paris. Then he became a professor of physics in Chicago in 1892.
Michelson was interested in the study of light, so he conducted a series of important experiments on the speed of light to reach the number 299,860,000 = 30,000 meters.
the second . In collaboration with Morley, he carried out a famous experiment to determine the "drift of ether", the negative result of which led to the development of the theory of relativity.
Michaelson invented several inventions, including: an interferometer that analyzed compounds of spectral lines • He also invented an echolon grating, which has a huge analytical capacity.
Michelson measured the wavelength of red cadmium to a degree of accuracy that reached one in a million, and thus determined the standard length of a meter for the International Bureau of Measurement in Paris, Bureau Inter national des Poids et Mesures.
He also succeeded in measuring the tide in closed tubes with a length of about 169 meters.
Michelson received the Nobel Prize for Chemistry in 1907.

⏹ Michell, John

English geologist (1724 - 1793)
Mitchell was educated at Cambridge, and became a fellow at Queen's College. Then he worked as a professor of geology and was chosen as a fellow of the Royal Society.
Mitchell designed the "static gravity" apparatus used by Cavendish. The device is known by the name of the rotating balance or the balance torsion, which happened later that Coulomb invented an analogue of it, without being known as Mitchell's device.
Mitchell was one of the founders of seismology upon the Pha. Conjectures enomena of Earthquakes He also wrote on the subject of astronomy.

⏹ Mechnikov, Alya
Ilya Mechnikov ( Elie Metchnikoff )

Russian biologist and zoologist (1845-1916)
Mechenkov studied in Kharakov, then worked as a professor of animal subjects and comparative anatomy in Odessa, then succeeded the world famous Pasteur in Paris. He was awarded the Nobel Prize for Medicine in 1908.
One of Mechnikov's most prominent works is his study of diseases and death. He said that it is possible to prolong life until the age of one hundred and fifty years, and that old age (and dementia) can be delayed by eating sour milk (yogurt. Or curd) as a result of the therapeutic value of lactose ferments.

⏹ Al-Majriti, Abu Al-Qasim Maslama bin Muhammad
al-Majriti

Famous mathematician and astronomer from Al-Andalus (950 - 1007)
He was well acquainted with the science of astronomy and the movements of the stars. Among his books were Themar Al-Num in Arithmetic, and a book in which he summarized the modification of the planets from Zij Al-Abtani, and the book Al-Ahjar.
He also took care of the marriage of Muhammad Bin Musa al-Khwarizmi, so he transferred his history according to the Persian calendar to the Arab Hijri history, and added good deeds to it.