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  2. Luminous efficacy - Wikipedia

    en.wikipedia.org/wiki/Luminous_efficacy

    lumen per square metre lm/m 2: L −2 ⋅J: Luminous flux emitted from a surface Luminous exposure: H v: lux second: lx⋅s L −2 ⋅T⋅J: Time-integrated illuminance Luminous energy density ω v: lumen second per cubic metre lm⋅s/m 3: L −3 ⋅T⋅J: Luminous efficacy (of radiation) K: lumen per watt: lm/W: M −1 ⋅L −2 ⋅T 3 ⋅J ...

  3. LED lamp - Wikipedia

    en.wikipedia.org/wiki/LED_lamp

    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 ...

  4. Phase-out of incandescent light bulbs - Wikipedia

    en.wikipedia.org/wiki/Phase-out_of_incandescent...

    The bill established a minimum standard of twenty-five lumens per watt by 2013 and sixty lumens per watt by 2018. [ 102 ] [ 103 ] [ 104 ] The California regulations were challenged in court by light bulb manufacturers upon the US Energy Department's action reversing the 2014 regulation that would have taken effect on 1 January 2020. [ 105 ]

  5. Lumen (unit) - Wikipedia

    en.wikipedia.org/wiki/Lumen_(unit)

    The same 1,000 lumens, spread out over ten square metres, produces a dimmer illuminance of only 100 lux. In equation form, 1 lx = 1 lm/m 2. A source radiating a power of one watt of light in the color for which the eye is most efficient (a wavelength of 555 nm, in the green region of the optical spectrum) has luminous flux of 683 lumens.

  6. Here are things Trump has promised to carry out on Day 1 of ...

    www.aol.com/11-things-trump-promised-carry...

    More than 1,580 defendants have been charged and more than 1,270 convicted in the Jan. 6 investigation, on charges ranging from unlawful parading to seditious conspiracy.

  7. Another 1 million not deported because Biden granted ... - AOL

    www.aol.com/news/another-1-million-not-deported...

    (The Center Square) – After millions of illegal foreign nationals were released into the country through new parole programs created by the Biden administration, at least one million were ...

  8. Cost of electricity by source - Wikipedia

    en.wikipedia.org/wiki/Cost_of_electricity_by_source

    The cost of a solar PV module make up the largest part of the total investment costs. As per the recent analysis of Solar Power Generation Costs in Japan 2021, module unit prices fell sharply. In 2018, the average price was close to 60,000 yen/kW, but by 2021 it is estimated at 30,000 yen/kW, so cost is reduced by almost half.

  9. States with the Highest and Lowest Property Tax Rates - AOL

    www.aol.com/states-highest-lowest-property-tax...

    No. 10 Highest: New Hampshire. Living in New Hampshire, the cradle of New England, can seem idyllic until you look at property taxes. The average property tax rate is 1.25%.