Ole Rømer

1644 - 1710

Ole Rømer

Ole Christensen Rømer (Danish: [ˈoːlə ˈʁœˀmɐ]; 25 September 1644 – 19 September 1710) was a Danish astronomer who, in 1676, made the first quantitative measurements of the speed of light. Rømer also invented the modern thermometer showing the temperature between two fixed points, namely the points at which water respectively boils and freezes. In scientific literature, alternative spellings such as "Roemer", "Römer", or "Romer" are common. Read more on Wikipedia

Since 2007, the English Wikipedia page of Ole Rømer has received more than 227,804 page views. His biography is available in 66 different languages on Wikipedia making him the 12th most popular astronomer.

Memorability Metrics

  • 230k

    Page Views (PV)

  • 73.28

    Historical Popularity Index (HPI)

  • 66

    Languages Editions (L)

  • 14.55

    Effective Languages (L*)

  • 2.64

    Coefficient of Variation (CV)

Page views of Ole Rømers by language


Among astronomers, Ole Rømer ranks 12 out of 495Before him are Tycho Brahe, Anders Celsius, Aristarchus of Samos, Edwin Hubble, Ulugh Beg, and Hipparchus. After him are William Herschel, Carl Sagan, Ja'far al-Sadiq, Charles Messier, Giovanni Domenico Cassini, and Abd al-Rahman al-Sufi.

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Among people born in 1644, Ole Rømer ranks 3Before him are Matsuo Bashō and Antonio Stradivari. After him are Henrietta of England, Louise de La Vallière, Heinrich Ignaz Franz Biber, Galdan Boshugtu Khan, Louis-François de Boufflers, Jakob Ammann, François de Neufville, duc de Villeroy, Juan Bautista Cabanilles, and Amcazade Köprülü Hüseyin Pasha. Among people deceased in 1710, Ole Rømer ranks 1After him are Louise de La Vallière, Emperor Higashiyama, Hennig Brand, Bernardo Pasquini, Gaspar Sanz, Louis, Prince of Condé, and Gottfried Kirch.

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In Denmark

Among people born in Denmark, Ole Rømer ranks 9 out of 579Before him are Niels Bohr (1885), Margrethe II of Denmark (1940), Hans Christian Ørsted (1777), Sigrid Undset (1882), Björn Ironside (800), and Vitus Bering (1681). After him are Christian VII of Denmark (1749), Margaret I of Denmark (1353), Lili Elbe (1882), Christian IV of Denmark (1577), Christian II of Denmark (1481), and Sweyn Forkbeard (960).

Among ASTRONOMERS In Denmark

Among astronomers born in Denmark, Ole Rømer ranks 1After him are Ejnar Hertzsprung (1873), John Louis Emil Dreyer (1852), Peter Andreas Hansen (1795), Christen Sørensen Longomontanus (1562), Holger Thiele (1878), and Richard Martin West (1941).

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