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Secondary sourcePhotograph1963

Celsius's Inverted Thermometer in the Uppsala Meteorology Museum

Uppsala-Bild · 1963

A 1963 photograph of Anders Celsius's own inverted thermometer, preserved as a treasured object in Uppsala's meteorology museum.

Depicts Celsius's own inverted thermometer, linking directly to his 1742 proposal that became the Celsius temperature scale.

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A photograph of an inverted thermometer displayed as a valued historical instrument in a meteorology museum.
Uppsala-Bild, photograph of Celsius's inverted thermometer, Uppsala meteorology museum, 1963. Upplands Museum, Sweden.

About this source

What it is

This 1963 photograph by Uppsala-Bild shows an inverted thermometer associated with Anders Celsius, displayed as a prized item in the meteorology museum at Uppsala. The photograph itself is held by the Upplands Museum.

Why it matters

The thermometer connects directly to Celsius's famous 1742 proposal of a temperature scale, which was later adapted into the Celsius scale used worldwide today. Objects like this help museums preserve the physical tools of early scientific work, showing how instruments from the past are valued as evidence of a scientist's methods and ideas.

Look closer

  • Why would a museum describe this thermometer as a treasured object?
  • What can an instrument like this tell us about how scientists measured and recorded the world in the 1700s?
  • What questions can't this photograph answer about how the thermometer was actually used by Celsius?

This photograph 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

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

A yellow three-storey corner building with cream-coloured quoins and a black railing on the flat roof. The sign on the facade reads GULDSMED. A street lamp and a downpipe stand in front, with bare tree branches in the foreground.Photograph

Secondary source

Celsiushuset Building, Uppsala

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