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Francesco Maurolico (16.09.1494-21.07.1575) was an Italian mathematician, physicist and astronomer.

James Clerk Maxwell (13.07.1831 — 5.02.1879) was an English physicist and a Fellow of the Royal Society of Edinburgh (1855) and of the Royal Society of London (1861).

Joseph Edward Mayer (born 5.02.1904) is an American theoretical physicist and chemist and a member of the National Academy of Sciences.

Julius Robert Mayer (25.02.1814-20.03.1878) was a German physician.

John Cunningham McLennan (14.04.1867 — 9.10.1935) was a Canadian physicist and a Fellow of the Royal Society of Canada (1903), of which he was president in 1924.

Edwin Mattison McMillan (born 18.09.1907) is an American physicist and a member of the National Academy of Sciences (1947).

Desyatina, economic (a measure of land area).

Mechanical quantities Name Symbol Weight G, P, W Time t Height h Pressure p Diameter d Length l Path length s Amount of substance ν, n Momentum p Stiffness coefficient k Safety factor k, n Efficiency η Coefficient of rol…

Symbol Measured in Description S m distance travelled v m/s velocity t s time x m coordinate a m/s 2 acceleration ω s -1 angular velocity T s period ν Hz frequency ε s -2 angular acceleration R m radius

William Frederick Meggers (13.07.1888 — 19.02. 1967) was an American physicist and a member of the National Academy of Sciences (1954).

Walther Fritz Meissner (16.12.1882 —16.02.1974) was a German physicist and a member of the Bavarian Academy of Sciences.

Lise Meitner (7.02.1878-27.10.1968) was an Austrian physicist and radiochemist.

Macedonio Melloni (11.04.1798-11.03.1854) was an Italian physicist.

Dmitri Ivanovich Mendeleev (8.02.1834—2.02.1907) was a Russian scientist and a corresponding member of the St Petersburg Academy of Sciences (1876).

Kurt Alfred Georg Mendelssohn (7.01.1906—18.09.1980) was an English physicist and a Fellow of the Royal Society (1951).

Mambillikalathil Govind Kumar Menon (born 28.08.1928) is an Indian physicist and a member of the Indian Academy of Sciences (1971), and its president in 1974 — 76.

Marin Mersenne (8.09.1588-1.09.1648) was a French scientist.

Mikhail Grigoryevich Meshcheryakov (born 17.09.1910) is a Soviet physicist and a corresponding member of the USSR Academy of Sciences (1953).

Gennady Andreyevich Mesyats (born 28.02.1936) is a Soviet physicist and a corresponding member of the USSR Academy of Sciences (1979).

Stefan Meyer (27.04.1872-29.12.1949) was an Austrian physicist and a member of the Austrian Academy of Sciences.

Albert Abraham Michelson (19.12.1852—9.05.1931) was an American physicist, a member of the National Academy of Sciences (1888) and its president in 1923-27.

Gustav Adolf Mie (29.09.1868-13.02.1957) was a German physicist.

Marian Mięsowicz (born 21.11.1907) is a Polish physicist and a member of the Polish Academy of Sciences (1964), and its vice-president in 1969 — 77.

Arkady Beinusovich Migdal (born 11.03.1911) is a Soviet theoretical physicist and an academician (1966; corresponding member 1953).

Vladimir Vasilyevich Migulin (born 10.07.1911) is a Soviet physicist and a corresponding member of the USSR Academy of Sciences (1970).