LIST OF ILLUSTRATIONS

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Portion of the Electrical Exhibit in the United States National Museum viii
Otto Von Guericke’s Electric Machine, 1650 2
Voltaic Pile, 1799 4
Faraday’s Dynamo, 1831 8
Pixii’s Dynamo, 1832 9
Daniell’s Cell, 1836 10
Grove’s Cell, 1838 11
Grove’s Incandescent Lamp, 1840 13
De Moleyns’ Incandescent Lamp, 1841 14
Wright’s Arc Lamp, 1845 15
Archereau’s Arc Lamp, 1848 16
Starr’s Incandescent Lamp, 1845 18
Staite’s Incandescent Lamp, 1848 19
Roberts’ Incandescent Lamp, 1852 19
Farmer’s Incandescent Lamp, 1859 20
Roberts’ Arc Lamp, 1852 21
Slater and Watson’s Arc Lamp, 1852 21
Diagram of “Differential” Method of Control of an Arc Lamp 22
Lacassagne and Thiers’ Differentially Controlled Arc Lamp, 1856 23
Serrin’s Arc Lamp, 1857 24
Siemens’ Dynamo, 1856 25
Alliance Dynamo, 1862 26
Wheatstone’s Self-Excited Dynamo, 1866 27
Gramme’s Dynamo, 1871 28
Gramme’s “Ring” Armature 28
Alteneck’s Dynamo with “Drum” Wound Armature, 1872 29
Lodyguine’s Incandescent Lamp, 1872 30
Konn’s Incandescent Lamp, 1875 30
Bouliguine’s Incandescent Lamp, 1876 31
Jablochkoff “Candle,” 1876 32
Jablochkoff’s Alternating Current Dynamo, 1876 33
Wallace-Farmer Arc Lamp, 1875 34
Wallace-Farmer Dynamo, 1875 34
Weston’s Arc Lamp, 1876 35
Brush’s Dynamo, 1877 36
Diagram of Brush Armature 36
Brush’s Arc Lamp, 1877 37
Thomson-Houston Arc Dynamo, 1878 38
Diagram of T-H Arc Lighting System 39
Thomson-Houston Arc Lamp, 1878 40
Thomson Double Carbon Arc Lamp 40
Maxim Dynamo 41
Sawyer’s Incandescent Lamp, 1878 42
Farmer’s Incandescent Lamp, 1878 42
Maxim’s Incandescent Lamp, 1878 43
Edison’s First Experimental Lamp, 1878 44
Diagram of Constant Current Series System 45
Diagram of Edison’s Multiple System, 1879 45
Edison Dynamo, 1879 46
Edison’s High Resistance Platinum Lamp, 1879 47
Edison’s High Resistance Platinum in Vacuum Lamp, 1879 47
Edison’s Carbon Lamp of October 21, 1879 48
Demonstration of Edison’s Incandescent Lighting System 49
Dynamo Room, S. S. Columbia 50
Original Socket for Incandescent Lamps 51
Wire Terminal Base Lamp, 1880 51
Original Screw Base Lamp, 1880 52
Improved Screw Base Lamp, 1881 52
Final Form of Screw Base, 1881 53
Diagram of Edison’s Three Wire System, 1881 54
Diagram of Stanley’s Alternating Current Multiple System, 1885 55
Standard Edison Lamp, 1884 56
Standard Edison Lamp, 1888 56
Standard Edison Lamp, 1894 57
Various Bases in Use, 1892 58
Thomson-Houston Socket 59
Westinghouse Socket 59
Adapters for Edison Screw Sockets, 1892 60
Various Series Bases in Use, 1892 61
Edison “Municipal” System, 1885 62
Edison “Municipal” Lamp, 1885 63
Shunt Box System, 1887 64
Enclosed Arc Lamp, 1893 65
Open Flame Arc Lamp, 1898 66
Enclosed Flame Arc Lamp, 1908 66
Constant Current Transformer, 1900 68
Series Incandescent Lamp Socket with Film Cutout, 1900 70
Nernst Lamp, 1900 71
Diagram of Nernst Lamp 72
Cooper-Hewitt Mercury Vapor Arc Lamp, 1901 73
Diagram of Cooper-Hewitt Lamp for Use on Alternating Current 74
Luminous or Magnetite Arc Lamp, 1902 75
Diagram of Series Magnetite Arc Lamp 76
Mercury Arc Rectifier Tube for Series Magnetite Arc Circuits, 1902 77
Early Mercury Arc Rectifier Installation 78
The Moore Tube Light, 1904 79
Diagram of Feeder Valve of Moore Tube 80
Osmium Lamp, 1905 82
Gem Lamp, 1905 83
Tantalum Lamp, 1906 84
Tungsten Lamp, 1907 86
Drawn Tungsten Wire Lamp, 1911 87
Quartz Mercury Vapor Lamp, 1912 88
Gas Filled Tungsten Lamp, 1913 89
Gas Filled Tungsten Lamp, 1923 90
Standard Tungsten Lamps, 1923 92

Portion of the Electrical Exhibit in the United States National Museum.

Section devoted to the historical development of the electric light and dynamo.