Box 1
Contains 109 Results:
James Joule's thermometer and marking microscope, 2000
Museum of Science and Industry, Manchester, England. Thermometer and marking microscope of James Joule. Made by Dancer, a prominent instrument maker of the mid-1800s in England.
James Joule's calorimeter, 2000
Museum of Science and Industry, Manchester, England. James Joule's calorimeter, containing a paddlewheel. Used to determine the mechanical equivalent of heat.
John Dalton's atomic models, 2000
Museum of Science and Industry, Manchester, England. John Dalton's atomic models. In the words of a critic of the atomic theory: "Atoms are round bits of wood invented by Mr. Dalton."
Three-dimensional plot of entropy, energy, and volume, 2000
Cavendish Laboratory, Cambridge, England. Three-dimensional plot of entropy, energy, and volume, constructed by James Maxwell.
Leiden jar with movable coatings, 2000
Cavendish Laboratory, Cambridge, England. Leiden jar with movable coatings, to demonstrate that nearly all of the charge carried by the jar is on the glass surface between the coatings.
Thomson's gas discharge tube, 2000
Cavendish Laboratory, Cambridge, England. Gas discharge tube, with which J. J. Thomson discovered and characterized the electron, and determined the charge to mass ratio.
James Chadwick's neutron chamber, 2000
Cavendish Laboratory, Cambridge, England. Chamber in which James Chadwick discovered and characterized the neutron.
X-ray tube c.1895, 2000
Cavendish Laboratory, Cambridge, England. Very early X-ray tube, captioned 1890-1900. (Roentgen discovered X-rays in November 1895.)
Portable apothecary's balance, 2000
Whipple Museum, Cambridge, England. Portable apothecary's balance. Often the center of such a balance is suspended from an overhead hook or simply from the user's hand.
Blowpipe kit, 2000
Whipple Museum, Cambridge, England. Blowpipe kit. Blowpipe analysis is used to quickly identify materials, based on their behavior in intense heat, and the glasses that they form. The technique is rarely used at present, except by amateur field mineralogists.