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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 Blue lamps
It also offers automated light systems. [1] Its line of next-generation LED lighting is called NXLED which was launched in 2012. [2] As of 2007, 95 percent of Akari's products are sourced from mainland China while the rest are from Thailand and Taiwan. Akari claimed to be the third most popular lighting system in the Philippines after Philips ...
The report claimed that due to outdoor lighting and air conditioning use in summer months, there is a net cost saving from changing to compact fluorescent lighting in all climates. [168] The cost of CFL and LED bulbs has decreased greatly since 2008, which shortens the time needed to pay off their initial cost.
A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, to produce ultraviolet and make a phosphor coating in the lamp glow.
Illuminants A, B, and C were introduced in 1931, with the intention of respectively representing average incandescent light, direct sunlight, and average daylight. Illuminants D (1967) represent variations of daylight, illuminant E is the equal-energy illuminant, while illuminants F (2004) represent fluorescent lamps of various composition.
Circular and U-shaped lamps were devised to reduce the length of fluorescent light fixtures. The first fluorescent light bulb and fixture were displayed to the general public at the 1939 New York World's Fair. The spiral CFL was invented in 1976 by Edward E. Hammer, an engineer with General Electric, [7] in response to the 1973 oil crisis. [8]
The history of electric light is well documented, [11] and with the developments in lighting technology the profession of lighting developed alongside it. The development of high-efficiency, low-cost fluorescent lamps led to a reliance on electric light and a uniform blanket approach to lighting, but the energy crisis of the 1970s required more design consideration and reinvigorated the use of ...
Premier Sports 2 is a second sports channel under the Premier brand. It primarily broadcasts WTA tennis and PGA Tour golf tournaments, as well as rugby and athletics.. It was launched on February 17, 2020, as Premier Tennis, which broadcasts all of the ATP and WTA tournaments throughout the year.