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Lumen maintenance is the most useful gauge to determine the lifetime or useful light output rating of an LED light source. Unlike traditional light sources such as incandescent lamps, LEDs rarely fail outright and instead continue to emit light, albeit at slowly diminishing rate over time. [1] Lumen maintenance is the luminous flux remaining ...
A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...
This list comprises the largest companies currently in the United States by revenue as of 2023, according to the Fortune 500 tally of companies and Forbes. The Fortune 500 list of companies includes only publicly traded companies, also including tax inversion companies. There are also corporations having foundation in the United States, such as ...
50 states and Washington, D.C. This table lists the 336 incorporated places in the United States, excluding the U.S. territories, with a population of at least 100,000 as of July 1, 2023, as estimated by the U.S. Census Bureau. Five states have no cities with populations exceeding 100,000. They are: Delaware, Maine, Vermont, West Virginia, and ...
American retail corporation Walmart has been the world's largest company by revenue since 2014. [ 1] The list is limited to the largest 50 companies, all of which have annual revenues exceeding US$130 billion. This list is incomplete, as not all companies disclose their information to the media or general public. [ 3]
These are lists of the lowest-income counties in the United States, based on measures of per capita personal income and median household income.This article lists counties by per capita personal income (PCPI), a more comprehensive measurement of an individual's income than per capita income (PCI).
The fallout from the panic led to Congress creating the Federal Reserve System. [29] Panic of 1910–1911: January 1910 – January 1912 2 years 1 year 7 months −14.7% −10.6% This was a mild but lengthy recession. The national product grew by less than 1%, and commercial activity and industrial activity declined.
The states and territories included in the United States Census Bureau 's statistics for the United States population, ethnicity, and most other categories include the 50 states and Washington, D.C. Separate statistics are maintained for the five permanently inhabited territories of the United States: Puerto Rico, Guam, the U.S. Virgin Islands ...
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