Zacharias Janssen

1585 - 1635

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Zacharias Janssen; also Zacharias Jansen or Sacharias Jansen; 1585 – pre-1632) was a Dutch spectacle-maker who lived most of his life in Middelburg. Read more on Wikipedia

Since 2007, the English Wikipedia page of Zacharias Janssen has received more than 477,105 page views. His biography is available in 21 different languages on Wikipedia. Zacharias Janssen is the 109th most popular inventor (down from 104th in 2019), the 140th most popular biography from Netherlands (down from 129th in 2019) and the 2nd most popular Dutch Inventor.

Zacharias Janssen is most famous for his invention of the first telescope.

Memorability Metrics

  • 480k

    Page Views (PV)

  • 69.55

    Historical Popularity Index (HPI)

  • 21

    Languages Editions (L)

  • 4.31

    Effective Languages (L*)

  • 2.62

    Coefficient of Variation (CV)

Page views of Zacharias Janssens by language


Among inventors, Zacharias Janssen ranks 109 out of 355Before him are Claude Chappe, Daniel Swarovski, André-Jacques Garnerin, Elisha Otis, Clément Ader, and Joseph Pilates. After him are Robert Moog, Theobald Boehm, Franz Reichelt, Zénobe Gramme, Bob Kahn, and Johann Philipp Reis.

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Among people born in 1585, Zacharias Janssen ranks 9Before him are Cornelius Jansen, Uriel da Costa, Hendrick Avercamp, John George I, Elector of Saxony, Anna of Tyrol, and Lucilio Vanini. After him are Jacob Le Maire, John Rolfe, Jacques Lemercier, Claude Favre de Vaugelas, Johann Baptist Cysat, and Squanto. Among people deceased in 1635, Zacharias Janssen ranks 5Before him are Lope de Vega, Wilhelm Schickard, Samuel de Champlain, and Jacques Callot. After him are Reza Abbasi, Joos de Momper, Fakhr al-Din II, Friedrich Spee, Elisabeth of Lorraine, Luke Foxe, and Alessandro Tassoni.

Others Born in 1585

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Others Deceased in 1635

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In Netherlands

Among people born in Netherlands, Zacharias Janssen ranks 140 out of 1,209Before him are L. E. J. Brouwer (1881), Pier Gerlofs Donia (1480), Wim Kok (1938), Piet Pieterszoon Hein (1577), Bernard Haitink (1929), and Karel Appel (1921). After him are Jeroen Krabbé (1944), Ruud Krol (1949), Jan van Scorel (1495), Maarten van Heemskerck (1498), Dennis Bergkamp (1969), and Aelbert Cuyp (1620).

Among INVENTORS In Netherlands

Among inventors born in Netherlands, Zacharias Janssen ranks 2Before him are Cornelis Drebbel (1572). After him are Boyan Slat (1994).