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Signature of Anders Celsius

Anders Celsius

The handwritten signature of Anders Celsius, a personal trace of the scientist as a writer of letters and documents.

This signature is a direct personal trace of Celsius as a writer of letters and official documents.

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Black handwritten signature in flowing cursive script on a white background, with a large looping capital letter A followed by letters resembling 'Celsius'. The strokes vary in thickness.
Signature of Anders Celsius.

About this source

What it is

This is the autograph signature of Anders Celsius, the Swedish astronomer and physicist. It survives as a digital reproduction on file-sharing platforms documenting his life and work.

Why it matters

A signature is a small but direct personal trace of a historical figure. It reminds students that Celsius, known today mainly for the temperature scale named after him, was a real person who wrote letters, papers, and official documents by hand.

Look closer

  • What can a signature tell us about a person that a printed name cannot?
  • Why might archives and museums preserve signatures separately from the documents they come from?
  • What questions does a signature leave unanswered about the person who wrote it?

This document is part of the curated material that grounds the AI version of Anders Celsius on Humy.ai — when students ask about related events, the AI can quote it and cite it.

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A man stands laying a wreath at a grave in Old Uppsala Church during a 1944 commemorative ceremony.Photograph

Secondary source

Wreath-Laying at Anders Celsius's Grave

Axel Sagerholm · 1944

Line drawing of a long, slender thermometer with a bulb at the bottom and a graduated scale marked with letters and numbers including 150, 125, 100, 75, 50, 25, and 0 along its stem.Artifact

Primary source

Celsius Original Thermometer Illustration

Anders Celsius · 1742

A photograph of an inverted thermometer displayed as a valued historical instrument in a meteorology museum.Photograph

Secondary source

Celsius's Inverted Thermometer in the Uppsala Meteorology Museum

Uppsala-Bild · 1963

Oil painting of a man with powdered white hair in a wig, wearing a dark brown coat with gold buttons and a white cravat, against a dark background with blue-grey tones. He has a slight smile and looks toward the viewer.Painting

Primary source

Portrait of Anders Celsius

Olof Arenius · 1733

Celsius House, Former ObservatoryPhotograph

Secondary source

Celsius House, Former Observatory

Uppsala-Bild · 1964

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