Oersted Piezometer

Oersted Piezometer

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Hans Christian Oersted (1777-1851) was a Danish scientist best known for having discovered that electric currents create magnetic fields. He also designed an instrument for measuring the compressibility of liquids. That instrument was variously known as an Oersted apparatus or a piezometer. The latter term may have been coined by the American inventor and mechanical engineer, Jacob Perkins (1766-1849).
Ref: Jacob Perkins, “On the Compressibility of Water,” American Journal of Science (May 1821): 347-352, and illus; from Philosophical Transactions of the Royal Society of London.
Currently not on view
Object Name
Oersted Piezometer
overall: 22 1/4 in x 6 1/2 in; 56.515 cm x 16.51 cm
overall: 22 1/2 in x 6 1/2 in; 57.15 cm x 16.51 cm
ID Number
catalog number
accession number
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Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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