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A lightbulb socket, lightbulb holder, light socket, lamp socket or lamp holder is a device which mechanically supports and provides electrical connections for a compatible electric lamp base. [1] Sockets allow lamps to be safely and conveniently replaced (re-lamping).
Underwriter's knot; Names: Underwriter's knot, Two-strand wall knot: Category: Stopper: Related: wall knot, crown knot: Typical use: electrical: Caveat: Note that the colors in this depiction do not match current practises in either the UK or the US, nor is this cable in keeping with current safety standards for electrical installations
The lamps use a tube that is curved or folded to fit into the space of an incandescent bulb, and a compact electronic ballast in the base of the lamp. Compared to general-service incandescent lamps giving the same amount of visible light, CFLs use one-fifth to
Similar to fluorescent lights, HMIs present problems with color temperature when used for film or video lighting applications.Unlike incandescent-lighting units, which are blackbody radiators limited to a theoretical maximum of 3680 K (the melting point of tungsten), HMI lamps, like all gas discharge lighting, emit the emission spectral lines of its constituent elements, specifically chosen so ...
[Note 2] If a lamp has a "G" code, [Note 3] this will mean the lamp is a bipin shape and the number following the G will indicate the distance in millimeters between the pins, usually either 4, 6.35 or 10; if the G is followed by a letter "Y", then the lamp's pins are thicker than normal— thus, a G6.35 has pins that are 1 mm in diameter but a ...
The lamp consisted of a Geissler tube that was excited by a battery-powered Ruhmkorff induction coil; an early transformer capable of converting DC currents of low voltage into rapid high-voltage pulses. Initially the lamp generated white light by using a Geissler tube filled with carbon dioxide. However, the carbon dioxide tended to break down.
In a carbon arc lamp, the electrodes are carbon rods in free air. To ignite the lamp, the rods are touched together, thus allowing a relatively low voltage to strike the arc. [1] The rods are then slowly drawn apart, and electric current heats and maintains an arc across the gap. The tips of the carbon rods are heated and the carbon vaporizes. [1]
The film had practically no budget as it involved only Sandberg and Losten. [1] The film involved two lights and two rooms. In particular, he used a Blackmagic cinema camera with a Tokina 11-16 lens, a Zoom H4N with a Røde NTG1 microphone, a paper lantern from IKEA, a 375-watt photo bulb, a Chinese knockoff redhead light from eBay, a Manfrotto tripod, a homemade dolly with PVC pipe, a piece ...