Calorimeter
name: label: maker
content: L. Golaz
notes: label: Description
content: A calorimeter measures the heat produced by the reaction of a substance with oxygen or another oxidant. Marcellin Berthelot (eminent French chemist) and P. Vielle described a successful form in 1885. Pierre Mahler (French civil engineer) introduced a modification of the Berthelot form in 1892. This was less expensive—it used porcelain (rather than platinum) to withstand the gases resulting from combustion—and was suitable for industrial purposes.
label: Description
content: This example is of that type. The inscriptions on the main body read “L. GOLAZ CONSTR / 23 bis Av. du Pere de Monts . . . / Paris” and “Obus Calorimetrique / B.M. No. 521.” The inscription on the pressure gauge reads "ATMOSPHERES / L. GOLAZ PARIS." This example was made after 1891 (when Lucien Golaz took charge of the firm that his father had begun in 1830) and before the demise of the firm in 1919. The Baltimore Polytechnic Institute donated it to the Smithsonian in 1964.
label: Description
content: Ref: M. P. E. Berthelot and P. Vielle, “Nouvelle method pour mesurer la chaleur de combustion du carbon et des composes organique,” <i>Annales de chemie et de physique</i> 6 (1885): 546-556.
label: Description
content: M. P. E. Berthelot, <i>Traité pratique de calorimetrie chimique</i> (Paris, 1893), chapter 8.
label: Description
content: Pierre Mahler, <i>Contribution à l’Étude des Combustibles</i> (Paris, 1892).
label: Description
content: MM. A. Carnot and H. Le Chatelier, “Rapport . . . sur une Étude de Pouvoir Calorifiques de Combustibles Industriels , fait par M. Mahler,” <i>Bulletin de la Société d’encouragement pour l’Industrie Nationale</i> 7 (June 1892): 317-319.
label: Location
content: Currently not on view
place: label: place made
content: France: Île-de-France, Paris
setName: label: See more items in
content: Medicine and Science: Physical Sciences
creditLine: label: Credit Line
content: Baltimore Polytechnic Institute
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.325752
label: catalog number
content: 325752
label: accession number
content: 257194
objectType: label: Object Name
content: Calorimeter
physicalDescription: label: Measurements
content: overall; pressure gauge: 12 in x 11 in x 6 1/2 in; 30.48 cm x 27.94 cm x 16.51 cm
label: Measurements
content: overall; bath: 23 1/8 in x 17 1/4 in x 13 1/4 in; 58.7375 cm x 43.815 cm x 33.655 cm
label: Measurements
content: overall; cage: 12 1/2 in x 5 1/2 in x 3 in; 31.75 cm x 13.97 cm x 7.62 cm