1869 - 1942
Sergey Alexeyevich Chaplygin (Russian: Серге́й Алексе́евич Чаплы́гин; 5 April 1869 – 8 October 1942) was a Russian and Soviet physicist, mathematician, and mechanical engineer. He is known for mathematical formulas such as Chaplygin's equation and for a hypothetical substance in cosmology called Chaplygin gas, named after him. He graduated in 1890 from Moscow University, and later became a professor. Read more on Wikipedia
Since 2007, the English Wikipedia page of Sergey Chaplygin has received more than 34,072 page views. His biography is available in 25 different languages on Wikipedia (up from 23 in 2019). Sergey Chaplygin is the 263rd most popular engineer (down from 250th in 2019), the 1,615th most popular biography from Russia (down from 1,437th in 2019) and the 32nd most popular Russian Engineer.
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Historical Popularity Index (HPI)
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Among engineers, Sergey Chaplygin ranks 263 out of 323. Before him are Frederick Terman, Louis Vicat, Hans Moravec, Louis Pouzin, Fulgence Bienvenüe, and Jack Parsons. After him are Mikhail Simonov, Émile Lemoine, Markus Reiner, Sam Eyde, Ransom E. Olds, and Robert Esnault-Pelterie.
1900 - 1982
HPI: 47.41
Rank: 257
HPI: 47.31
Rank: 258
1948 - Present
HPI: 47.27
Rank: 259
1931 - Present
HPI: 47.16
Rank: 260
1852 - 1936
HPI: 47.15
Rank: 261
1914 - 1952
HPI: 47.14
Rank: 262
1869 - 1942
HPI: 47.05
Rank: 263
1929 - 2011
HPI: 46.99
Rank: 264
1840 - 1912
HPI: 46.92
Rank: 265
1886 - 1976
HPI: 46.88
Rank: 266
1866 - 1940
HPI: 46.83
Rank: 267
1864 - 1950
HPI: 46.82
Rank: 268
1881 - 1957
HPI: 46.73
Rank: 269
Among people born in 1869, Sergey Chaplygin ranks 121. Before him are Robert W. Paul, Johannes Linnankoski, Rihard Jakopič, August Blom, Carlo Airoldi, and Alice Hamilton. After him are Levon Shant, Constantin Angelescu, Bainbridge Colby, Helene Stöcker, Harry Stafford, and Henriette Roland Holst. Among people deceased in 1942, Sergey Chaplygin ranks 174. Before him are Dorothea Klumpke, Laura Hope Crews, Carl Sternheim, Otto Herschmann, Frank Irons, and Heinrich Burger. After him are Natalya Kovshova, Oleg Losev, Jüri Jaakson, Stanisław Zaremba, Louis Borno, and Pranas Dovydaitis.
1869 - 1943
HPI: 47.63
Rank: 115
1869 - 1913
HPI: 47.62
Rank: 116
1869 - 1943
HPI: 47.50
Rank: 117
1869 - 1947
HPI: 47.48
Rank: 118
1869 - 1929
HPI: 47.42
Rank: 119
1869 - 1970
HPI: 47.20
Rank: 120
1869 - 1942
HPI: 47.05
Rank: 121
1869 - 1951
HPI: 46.81
Rank: 122
1869 - 1948
HPI: 46.52
Rank: 123
1869 - 1950
HPI: 46.46
Rank: 124
1869 - 1943
HPI: 46.32
Rank: 125
1869 - 1940
HPI: 46.30
Rank: 126
1869 - 1952
HPI: 45.56
Rank: 127
1861 - 1942
HPI: 47.62
Rank: 168
1879 - 1942
HPI: 47.45
Rank: 169
1878 - 1942
HPI: 47.42
Rank: 170
1877 - 1942
HPI: 47.17
Rank: 171
1886 - 1942
HPI: 47.15
Rank: 172
1881 - 1942
HPI: 47.05
Rank: 173
1869 - 1942
HPI: 47.05
Rank: 174
1920 - 1942
HPI: 46.83
Rank: 175
1903 - 1942
HPI: 46.80
Rank: 176
1870 - 1942
HPI: 46.77
Rank: 177
1863 - 1942
HPI: 46.74
Rank: 178
1865 - 1942
HPI: 46.68
Rank: 179
1886 - 1942
HPI: 46.49
Rank: 180
Among people born in Russia, Sergey Chaplygin ranks 1,615 out of 3,262. Before him are Aleksandre Chivadze (1955), Marina Ladynina (1908), Valentina Ponomaryova (1933), Lyudmila Kondratyeva (1958), Ramazan Abdulatipov (1946), and Nikolai Golovanov (1891). After him are Irina Privalova (1968), Igor Ilyinsky (1901), Aleksey Koltsov (1809), Alexander Gennadiyevich Zaitsev (1952), Gennady Voronov (1910), and Vladimir Mashkov (1963).
1955 - Present
HPI: 47.10
Rank: 1,609
1908 - 2003
HPI: 47.09
Rank: 1,610
1933 - 2023
HPI: 47.09
Rank: 1,611
1958 - Present
HPI: 47.07
Rank: 1,612
1946 - Present
HPI: 47.07
Rank: 1,613
1891 - 1953
HPI: 47.05
Rank: 1,614
1869 - 1942
HPI: 47.05
Rank: 1,615
1968 - Present
HPI: 47.04
Rank: 1,616
1901 - 1987
HPI: 47.04
Rank: 1,617
1809 - 1842
HPI: 47.01
Rank: 1,618
1952 - Present
HPI: 47.01
Rank: 1,619
1910 - 1994
HPI: 47.01
Rank: 1,620
1963 - Present
HPI: 47.00
Rank: 1,621
Among engineers born in Russia, Sergey Chaplygin ranks 32. Before him are Vasily Mishin (1917), Semyon Lavochkin (1900), Vladimir Grigoryevich Fyodorov (1874), Alexander Kemurdzhian (1921), Alexander Mikulin (1895), and Vladimir Mikhailovich Myasishchev (1902). After him are Mikhail Simonov (1929), Mikhail Tikhonravov (1900), Yuri Artsutanov (1929), Boris Lisunov (1898), Georgy Babakin (1914), and Viktor Kozin (1953).
1917 - 2001
HPI: 50.98
Rank: 26
1900 - 1960
HPI: 50.92
Rank: 27
1874 - 1966
HPI: 50.12
Rank: 28
1921 - 2003
HPI: 49.75
Rank: 29
1895 - 1985
HPI: 49.41
Rank: 30
1902 - 1978
HPI: 48.57
Rank: 31
1869 - 1942
HPI: 47.05
Rank: 32
1929 - 2011
HPI: 46.99
Rank: 33
1900 - 1974
HPI: 45.95
Rank: 34
1929 - 2019
HPI: 45.16
Rank: 35
1898 - 1946
HPI: 45.12
Rank: 36
1914 - 1971
HPI: 43.29
Rank: 37
1953 - Present
HPI: 41.94
Rank: 38