Mathematician:Johann Heinrich Lambert

Mathematician

Swiss mathematician, physicist and astronomer.

The first to introduce hyperbolic functions into trigonometry.

Made conjectures regarding non-Euclidean space.

Credited with the first proof that $\pi$ is irrational.

Nationality

Swiss

History

• Born: 26 Aug 1728, Mülhausen, Alsace (now Mulhouse, France)
• Died: 25 Sept 1777, Berlin, Prussia (now Germany)

Theorems and Definitions

• Seven map projections:
  • Lambert Conformal Conic Projection
  • Transverse Mercator Projection
  • Lambert Azimuthal Equal Area Projection
  • Lagrange Projection
  • Lambert Cylindrical Equal Area Projection
  • Transverse Cylindrical Equal Area Projection
  • Lambert Conical Equal Area Projection

• The Beer-Lambert-Bouguer Law, also known as the Lambert-Beer Law, Beer's Law, the Beer-Lambert Law or Lambert's Law (with August Beer and Pierre Bouguer)

• Lambert (unit)
• Lambert Series
• Lambert W Function
• Lambert Quadrilateral
• Lambertian Reflectance

• Lambert's Cosine Law
• Lambert's Trinomial Equation

Results named for Johann Heinrich Lambert can be found here.

Definitions of concepts named for Johann Heinrich Lambert can be found here.

Publications

• 1760: Photometria
• 1761: Cosmologische Briefe über die Einrichtung des Weltbaues
• 1761: Mémoire sur quelques propriétés remarquables des quantités transcendentes circulaires et logarithmiques
• 1764: New Organon
• 1772: Ammerkungen und Zusatze zurder Land und Himmelscharten Entwerfung

Sources

• John J. O'Connor and Edmund F. Robertson: "Johann Heinrich Lambert": MacTutor History of Mathematics archive

• 1972: George F. Simmons: Differential Equations ... (previous) ... (next): $1$: The Nature of Differential Equations: $\S 4$: Growth, Decay and Chemical Reactions: Problem $6$: Footnote $^2$
• 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): A List of Mathematicians in Chronological Sequence
• 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $3 \cdotp 14159 \, 26535 \, 89793 \, 23846 \, 26433 \, 83279 \, 50288 \, 41972 \ldots$
• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): A List of Mathematicians in Chronological Sequence
• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $3 \cdotp 14159 \, 26535 \, 89793 \, 23846 \, 26433 \, 83279 \, 50288 \, 41971 \ldots$
• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): Lambert, Johann Heinrich (1728-77)
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): Lambert, Johann Heinrich (1728-77)
• 2008: Ian Stewart: Taming the Infinite ... (previous) ... (next): Chapter $2$: The Logic of Shape: Archimedes
• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): Lambert, Johann Heinrich (1728-77)