Lighting Journal, Količina 4 –Količina 5 ,2. izdajaLighting Journal Company, 1916 |
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ampere arc lamps artificial light assignor beam bowl brackets brightness building burner candlepower ceiling central station Chicago Class 21 color Committee Conn Cooper Hewitt Cutler-Hammer daylight Edison effect efficiency Elec Electric Lamp Electric Light equipment factory filament Filed Aug Filed Dec Filed Jan Filed July Filed June Filed Nov Filed Sept flood lighting flood lighting projectors foot candles gas companies gas lamps gas lighting glass glassware Headlight holder Holophane incandescent lamps industrial installation intensity Issued Aug Issued Feb Issued July Issued June Issued Nov Issued Oct Issued Sept July 11 light source Lighting Fixture LIGHTING JOURNAL lighting units lumens luminous luminous arc manufacturers mazda lamps metal Metal Spinning N. Y. Filed Ohio Philadelphia photographic photometer Pittsburgh plug reflector semi-indirect shade socket standard street lighting surface Term 3½ tion tungsten watt Westinghouse window wiring
Priljubljeni odlomki
Stran 6 - Its purpose is to collect and select scientific and practical information concerning progress and developments in the art of incandescent lamp manufacturing and to distribute this information to the companies entitled to receive this Service.
Stran 73 - ... candle-power in the center of slightly over 400,000 by locating the filament exactly at the focus ; or, by drawing the filament behind the focus, the beam may be spread to 18 degrees, with an apparent candlepower of approximately 150,000 in the center of the beam. The locating of the filament at the focus is accomplished by directing the beam on any convenient surface 100 to 150 feet away and moving the lamp backward or forward until the smallest spot of light is obtained on the lighted surface....
Stran 105 - DRAMA, and that the following is, to the best of his knowledge and belief, a true statement of the ownership, management (and if a daily paper, the circulation), etc., of the aforesaid publication for the date shown in the above caption, required by the Act of August 24, 1912, embodied in section 443, Postal Laws and Regulations, printed on the reverse of this form, to wit: 1.
Stran 84 - Every such contract for the conditional sale of any goods and chattels attached, or to be attached...
Stran 15 - The placing or shading of lamps so that light from them does not fall directly on the eyes of an operator when engaged on his work or when looking horizontally across the workroom.
Stran 15 - working areas " of workrooms the illumination measured on a horizontal plane at floor level shall be not less than 0-25 foot-candle, without prejudice to the illumination required for the work itself. (3) In all parts of iron foundries in which work is carried on or over which any person is ordinarily liable to pass, the illumination measured on a horizontal plane at floor level shall be not less than 0-4 foot-candle.
Stran 99 - Many cases can be noted where the lamp is placed too low in the dish, concentrating the emitted light in a fairly narrow angle, resulting in a ring or circle of very bright illumination on the ceiling directly above the unit with the spaces between units comparatively dark. At other times to get rid of this effect the lamp is raised so high that from some parts of the room the filament becomes visible, introducing glare. On the introduction of the mazda .C lamp with its rather concentrated filament...
Stran 13 - E' be the specific luminous radiation. For surfaces obeying Lambert's cosine law of emission. 863 The Lambert, the CGS Unit of Brightness, the brightness of a perfectly diffusing surface radiating or reflecting one lumen per square centimeter.
Stran 41 - safety-first" work. Secretary of the Interior Lane has sent a letter to the governor of each State inviting him to send a delegate, and asking that the Chief Mine Inspector, a representative of the Industrial Commission, or of other agencies engaged in compiling statistics relating to the various mineral industries, also attend this exhibition. It is hoped that all interested persons will visit the "safety-first...