Torsion Pendulum
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E. Knott Apparatus Company"], "topic": ["Scientific apparatus and instruments", "Science"], "place": ["United States", "Massachusetts", "Boston"], "online_media_type": ["Images"]}, "freetext": {"setName": [{"label": "See more items in", "content": "Medicine and Science: Physical Sciences"}], "identifier": [{"label": "ID Number", "content": "PH.315752"}, {"label": "catalog number", "content": "315752"}, {"label": "accession number", "content": "217544"}], "notes": [{"label": "Description", "content": "The \u00e2\u0080\u009cKnott, Boston\u00e2\u0080\u009d inscription on one leg of this instrument refers to L. E. Knott, an apparatus firm that began in business in 1895. Knott termed it an Improved Sabine\u00e2\u0080\u0099s Torsion Pendulum for determining the moment of torsion of a wire and the moment of inertia of a ring."}, {"label": "Description", "content": "Ref: Wallace Clement Sabine, <i>A Student\u00e2\u0080\u0099s Manual of a Laboratory Course in Physical Measurements</i> (Boston, 1893), pp. 30-32."}, {"label": "Description", "content": "L. E. Knott, <i>Catalogue of Physical Instruments</i> (Boston, 1912), p. 129,"}, {"label": "Location", "content": "Currently not on view"}], "name": [{"label": "maker", "content": "L. E. Knott Apparatus Company"}], "topic": [{"label": "subject", "content": "Science & Scientific Instruments"}], "place": [{"label": "place made", "content": "United States: Massachusetts, Boston"}], "physicalDescription": [{"label": "Measurements", "content": "overall: 7 in x 5 3/8 in x 4 1/2 in; 17.78 cm x 13.6525 cm x 11.43 cm"}, {"label": "Measurements", "content": "overall: 24 1/8 in x 13 5/8 in x 11 1/8 in; 61.2775 cm x 34.6075 cm x 28.2575 cm"}], "dataSource": [{"label": "Data Source", "content": "National Museum of American History"}], "objectType": [{"label": "Object Name", "content": "torsion pendulum"}]}}, "url": "edanmdm:nmah_1393291", "hash": "aa5b9d7b62917a2c09e8ab2e5cc35824f0874b38", "docSignature": "f743e4308c5ef88802374a3ac27b46a0", "timestamp": 1663782495, "lastTimeUpdated": 1653680574, "title": "Torsion Pendulum"}