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The amount of mercury in a fluorescent lamp varies from 3 to 46 mg, depending on lamp size and age. Newer lamps contain less mercury and the 3–4 mg versions are sold as low-mercury types. A typical 2006-era 4 ft (122 cm) T-12 fluorescent lamp (i.e. F34T12) contains about 5 milligrams of mercury.
Fluorescent lamps with magnetic ballasts flicker at a normally unnoticeable frequency of 100 or 120 Hz (twice of the utility frequency; the lamp is lit on both the positive and negative half-wave of a cycle). This flickering can cause problems for some individuals with light sensitivity [1] and are associated with headaches and eyestrain.
CFLs are also a more energy-efficient option than incandescents — 75% more efficient. If every household in the U.S. replaced one incandescent bulb with a CFL, in fact, the energy saved could ...
The Home Depot, Inc. is an American multinational home improvement retail corporation that sells tools, construction products, appliances, and services, including fuel and transportation rentals. Home Depot is the largest home improvement retailer in the United States. In 2021, the company had 490,600 employees and more than $151 billion in ...
President George W. Bush. Date signed. December 19, 2007. United States Lighting Energy Policy is moving towards increased efficiency in order to lower greenhouse gas emissions and energy use. Lighting efficiency improvements in the United States can be seen through different standards and acts. The Energy Independence and Security Act of 2007 ...
For information on disposing of fluorescent bulbs and tubes or questions about disposing of other items, call Benton County at 509-786-5611. The April 1 event is only for household waste. Business ...
Across the 41 new homes that sold, the price per square foot averaged $970.27. Heber, UT had the second-highest new construction sales prices at $1.38 million, and a price per square foot of $725.36.
One of the first diameters of fluorescent lamps, with the 15W T12 and 20W T12 having been introduced in 1938. These aren't as efficient as newer lamp options. [6] For T2–T12 and T17, the number indicates the tube diameter in 1⁄8 inches, e.g. T2 → 2⁄8 in and T17 → 17⁄8 in.
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