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The efficacy of fluorescent tubes ranges from about 16 lumens per watt for a 4 watt tube with an ordinary ballast to over 100 lumens per watt [51] with a modern electronic ballast, commonly averaging 50 to 67 lm/W overall. [52] Ballast loss can be about 25% of the lamp power with magnetic ballasts, and around 10% with electronic ballasts.
Two newer ranges, high-efficiency (HE) 14–35 W, and high-output (HO) 24–80 W, introduced in the 1990s. [2] Panasonic's range of FHL fluorescent tubes in 18W, 27W, and 36W varieties for the Japanese market. Circular fluorescent tubes. Thorn/General Electric 2D fluorescent lamps and other similar lamps from various manufacturers. T6 3 ⁄ 4: ...
A CFL has a higher purchase price than an incandescent lamp, but can save over five times its purchase price in electricity costs over the lamp's lifetime. [1] Like all fluorescent lamps, CFLs contain toxic mercury, [2] which complicates their disposal. In many countries, governments have banned the disposal of CFLs together with regular garbage.
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 W COB filament LED lamp: 600 18 W fluorescent lamp: 1250 100 W incandescent lamp: 1750 40 W fluorescent lamp: 2800 35 W xenon bulb: 2200–3200 100 W fluorescent lamp: 8000 127 W low pressure sodium vapor lamp: 25,000 400 W metal-halide lamp: 40,000 Values are given for newly manufactured sources.
One’s biological age, which measures the body’s physiological state, may help predict who is at risk for developing colon polyps, a known risk factor for colorectal cancer.