CHEMIST

Peter Jacob Hjelm

1746 - 1813

Photo of Peter Jacob Hjelm

Icon of person Peter Jacob Hjelm

Peter (Petter) Jacob Hjelm (2 October 1746 – 7 October 1813) was a Swedish chemist and the first person to isolate the element molybdenum in 1781, four years after its discovery by Swedish chemist Carl Wilhelm Scheele. Working with Molybdic acid, Hjelm chemically reduced molybdenum oxide with carbon in an oxygen-free atmosphere, resulting in carbon dioxide and a near-pure dark metal powder to which he gave the name 'molybdenum'. Read more on Wikipedia

Since 2007, the English Wikipedia page of Peter Jacob Hjelm has received more than 28,568 page views. His biography is available in 15 different languages on Wikipedia. Peter Jacob Hjelm is the 583rd most popular chemist (down from 514th in 2019), the 1,200th most popular biography from Sweden (down from 920th in 2019) and the 20th most popular Swedish Chemist.

Memorability Metrics

  • 29k

    Page Views (PV)

  • 41.45

    Historical Popularity Index (HPI)

  • 15

    Languages Editions (L)

  • 4.10

    Effective Languages (L*)

  • 2.41

    Coefficient of Variation (CV)

Page views of Peter Jacob Hjelms by language

Over the past year Peter Jacob Hjelm has had the most page views in the with 3,071 views, followed by German (618), and Spanish (562). In terms of yearly growth of page views the top 3 wikpedia editions are Malagasy (109.66%), Catalan (101.06%), and Slovak (33.67%)

Among CHEMISTS

Among chemists, Peter Jacob Hjelm ranks 583 out of 602. Before him are Omowunmi Sadik, F. Albert Cotton, Jacqueline Barton, Bonnie Bassler, Percy Lavon Julian, and Benjamin Silliman. After him are Yellapragada Subbarow, Martyn Poliakoff, John George Children, Richard Lerner, Esther M. Conwell, and Omar M. Yaghi.

Most Popular Chemists in Wikipedia

Go to all Rankings
Load previousLoad previous

Contemporaries

Among people born in 1746, Peter Jacob Hjelm ranks 37. Before him are Joachim Heinrich Campe, Robert R. Livingston, André Thouin, Louise du Pierry, James Wyatt, and Charles Cotesworth Pinckney. After him are Henry Grattan, and Begum Samru. Among people deceased in 1813, Peter Jacob Hjelm ranks 41. Before him are Sophronius of Vratsa, James Wyatt, Zebulon Pike, George Clymer, Alexander Wilson, and Samuel Osgood. After him is Benjamin Stoddert.

Others Born in 1746

Go to all Rankings
Load previousLoad previous

Others Deceased in 1813

Go to all Rankings
Load previousLoad previous

In Sweden

Among people born in Sweden, Peter Jacob Hjelm ranks 1,200 out of 1,879. Before him are Bengt-Åke Gustafsson (1958), Ola Lindgren (1964), Mattias Ekström (1978), Daniel Espinosa (1977), Lars Eriksson (1965), and Jesper Strömblad (1972). After him are Kurt Lundquist (1925), Nils Silfverskiöld (1888), Sonja Åkesson (1926), Göran Hagberg (1947), Simon Aspelin (1974), and Stefan Lövgren (1970).

Others born in Sweden

Go to all Rankings
Load previousLoad previous

Among CHEMISTS In Sweden

Among chemists born in Sweden, Peter Jacob Hjelm ranks 20. Before him are Torbern Bergman (1735), Anders Gustaf Ekeberg (1767), Nils Gabriel Sefström (1787), Anders Jahan Retzius (1742), Anna Sundström (1785), and Lars Fredrik Nilson (1840).

Swedish born Chemists

Go to all Rankings
Load previousLoad previous