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  2. Fluorescent-lamp formats - Wikipedia

    en.wikipedia.org/wiki/Fluorescent-lamp_formats

    Special purpose tubes Numeric code Alphabetic Code Fluorescent lamp type Notes 05 N/A Germicidal lamps: No phosphors used in these lamps at all, and the enveplope is made of fused quartz instead of glass. In the American lamp code, the F as in FxxTyy is replaced by a G as in GxxTyy, indicating that it's a germicidal lamp. 08 BLB Black-Light ...

  3. Aquarium lighting - Wikipedia

    en.wikipedia.org/wiki/Aquarium_lighting

    T5 High Output fluorescent bulbs which are thinner than traditional T8 bulbs and provide a much brighter, more powerful light are commonly used as are the older VHO (Very High Output) fluorescent tubes and compact fluorescent lighting. Another light source in reef aquariums is metal halide lighting. These high output lights closely recreate the ...

  4. Fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_lamp

    T12 fluorescent tubes. The first two are rapid start, (for "tombstone" and socket holders respectively) while the third is an instant-start lamp. The instant-start has a characteristic, rounded, single pin, for plugging into the spring-loaded socket holders. Instant start fluorescent tubes were invented in 1944. Instant start simply uses a high ...

  5. LED tube - Wikipedia

    en.wikipedia.org/wiki/LED_tube

    LED tubes. LED tube is a type of LED lamp used in fluorescent tube luminaires with G5 and G13 bases to replace traditional fluorescent tubes. [1] As compared to fluorescent tubes, the most important advantages of LED tubes are energy efficiency and long service life. LED tubes are sometimes also referred to as ‘LED fluorescent tubes’.

  6. Fluorescent lamps and health - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_lamps_and_health

    An open (single envelope) CFL [12] An encapsulated/closed (double envelope) CFL. Some fluorescent lamps emit ultraviolet radiation. [citation needed] The Health Protection Agency of the United Kingdom has conducted research concluding that exposure to open (single envelope) compact fluorescent lamps (CFLs) for over 1 hour per day at a distance of less than 30 cm can exceed guideline levels as ...

  7. Cold cathode - Wikipedia

    en.wikipedia.org/wiki/Cold_cathode

    Some types contain a source of beta radiation to start ionization of the gas that fills the tube. [5] In some tubes, glow discharge around the cathode is usually minimized; instead there is a so-called positive column, filling the tube. [6] [7] [note 2] Examples are the neon lamp and nixie tubes. Nixie tubes too are cold-cathode neon displays ...

  8. Phosphor - Wikipedia

    en.wikipedia.org/wiki/Phosphor

    Display tubes P40, GA ZnS:Ag+(Zn,Cd)S:Cu White – – Long CRT Display tubes P43, GY Gd 2 O 2 S:Tb Yellow-Green 545 nm – Medium CRT Display tubes, Electronic Portal Imaging Devices (EPIDs) used in radiation therapy linear accelerators for cancer treatment P45, WB Y 2 O 2 S:Tb White 545 nm – Short CRT Viewfinders P46, KG Y 3 Al 5 O 12:Ce ...

  9. Plasma lamp - Wikipedia

    en.wikipedia.org/wiki/Plasma_lamp

    Many modern plasma lamps have very small light sources—far smaller than HID bulbs or fluorescent tubes—leading to much higher luminaire efficiencies also. High-intensity discharge lamps have typical luminaire efficiencies of 55%, and fluorescent lamps of 70%. Plasma lamps typically have luminaire efficiencies exceeding 90%.

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