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  2. Elinchrom - Wikipedia

    en.wikipedia.org/wiki/Elinchrom

    The continuous lighting uses tungsten bulbs with a colour temperature of around 3200 K instead of daylight-balanced (5500 K) flash tubes. All units accept the same range of light modifiers as the flash units, subject to the additional heat generated by the bulbs. The Scanlite range employs halogen bulbs.

  3. Tungsram - Wikipedia

    en.wikipedia.org/wiki/Tungsram

    The name "Tungsram" is a portmanteau of tungsten (/ ˈ t ʌ ŋ s t ən / TUNG-stən) and wolfram (/ ˈ w ʊ l f r əm / WUUL-frəm), the two common names of the metal used for making light bulb filaments. Before becoming nationalized by the Communist government in 1945, the company was the world's third largest manufacturer of light bulbs and ...

  4. Luminous efficacy - Wikipedia

    en.wikipedia.org/wiki/Luminous_efficacy

    No substance is solid and usable as a light bulb filament at temperatures anywhere close to this. The surface of the sun is not quite that hot." [ 23 ] At temperatures where the tungsten filament of an ordinary light bulb remains solid (below 3683 kelvin), most of its emission is in the infrared .

  5. Infrared lamp - Wikipedia

    en.wikipedia.org/wiki/Infrared_lamp

    Round bulbs, often tinted red to reduce visible light, provide infrared radiant heat suitable for warming of people or animals, but the power density available is low. The development of quartz halogen linear lamps allowed much higher power density up to 200 watts/inch of lamp (8 w/mm), useful for industrial heating, drying and processing ...

  6. Halogen lamp - Wikipedia

    en.wikipedia.org/wiki/Halogen_lamp

    However, the overall bulb envelope temperature must be significantly higher than in conventional incandescent lamps for this reaction to succeed: it is only at temperatures of above 250 °C (482 °F) [11] on the inside of the glass envelope that the halogen vapor can combine with the tungsten and return it to the filament rather than the ...

  7. Tungsten film - Wikipedia

    en.wikipedia.org/wiki/Tungsten_film

    When shot outdoors, tungsten film produces a strong blue cast, an effect which is often used purposely to create different color contrasts. In the motion picture industry the use of underexposed tungsten-balanced film in an outdoor setting is a common way of producing a " day for night " effect, whereby film shot during the daytime looks as if ...

  8. High-intensity discharge lamp - Wikipedia

    en.wikipedia.org/wiki/High-intensity_discharge_lamp

    The Kelvin color temperature scale ranges from 1000K (amber) to 3000K (yellow) to 5500K (white) to 8000K (blue) to 12000K (purple). HID Lamp Color Temperature Range. HID lamps produce different colors of light primarily through the use of various metal additives in the lamp's arc tube and the physics of the gas discharge process. [11]

  9. Phase-out of incandescent light bulbs - Wikipedia

    en.wikipedia.org/wiki/Phase-out_of_incandescent...

    60 W incandescent light bulb with energy efficiency class E Equivalent 42 W halogen incandescent light bulb with efficiency class C Compact fluorescent lamp LED lamp circa 2021 Various governments have passed legislation to phase out manufacturing or importation of incandescent light bulbs for general lighting in favor of more energy- efficient ...

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