Box 1
Contains 109 Results:
Faraday Museum, 2000
Royal Institution, London, England. Interior of Faraday Museum.
1791 combustion chamber, after Lavoisier, 2000
Teyler's Museum, Haarlem, Netherlands. Oil combustion chamber (1791 in the style of Lavoisier). Large glass flask contains an Argand burner of glass and brass. Right-angled brass tube admits oxygen; free brass tube removes combustion products; brass tube into cylinder admits oil.
Voltaic pile, c.1800, 2000
Teyler's Museum, Haarlem, Netherlands. Voltaic pile, c. 1800. Alternating zinc and copper plates.
Single-barrel vacuum pump, 2000
Museum Boerhaave, Leiden, Netherlands. Single-barrel vacuum pump, in the manner of Robert Boyle, c. 1665.
Battery of Leiden flasks, 2000
Museum Boerhaave, Leiden, Netherlands. Set of Leiden flasks, made by John Cuthbertdon, 1775-1800.
Duboscq spectroscope, 2000
Museum Boerhaave, Leiden, Netherlands. Spectroscope by J. Duboscq, Paris c.1870. Light that was produced by placing a sample in a Bunsen burner flame, is refracted by a prism (on the center table) and observed through a telescope.
Separatory Florence flasks, 2000
Museum Boerhaave, Leiden, Netherlands. Before modern separatory funnels, separatory flasks such as these were used to separate liquids of different density. The more dense liquid, on the bottom, was poured off through the side arm.
Faraday-type rotating wire "motor", 2000
Museum Boerhaave, Leiden, Netherlands. Rotating wire motor, in the manner of Faraday 1825-50. Mercury is placed in the shallow dish, at the center of which is fixed a permanent magnet. Electric current, such as from a voltaic pile, is passed through the wire and into the mercury. The moving current creates a magnetic field around the wire. Its interaction with the permanent magnet causes the wire to rotate. This is generally accepted as the predecessor of electric motors.
Comparative colorimeter, 2000
Van't Hoff's asymmetric models, 2000
Museum Boerhaave, Leiden, Netherlands. Jacobus Henricus van't Hoff's cardboard models of malic acid, succinic acid, and tartaric acid. These models enabled van't Hoff to demonstrate the asymmetry that exists around a tetrahedral center in certain molecules.