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2. Luminous flux - Wikipedia

   en.wikipedia.org/wiki/Luminous_flux

   The luminous intensity (in candelas) is a measure of how bright the beam in a particular direction is. If a lamp has a 1 lumen bulb and the optics of the lamp are set up to focus the light evenly into a 1 steradian beam, then the beam would have a luminous intensity of 1 candela. If the optics were changed to concentrate the beam into 1/2 ...

3. 8 Affordable Christmas Items Available at Costco Now - AOL

   www.aol.com/8-affordable-christmas-items...

   Costco offers these lighted figures with 24K gold accents for $59.99 each. Choose from an angel, nutcracker, Santa, or a Christmas tree, all measuring just under 11 inches tall.

4. 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 ...

5. Luminous efficacy - Wikipedia

   en.wikipedia.org/wiki/Luminous_efficacy

   Luminous efficacy can be normalized by the maximum possible luminous efficacy to a dimensionless quantity called luminous efficiency.The distinction between efficacy and efficiency is not always carefully maintained in published sources, so it is not uncommon to see "efficiencies" expressed in lumens per watt, or "efficacies" expressed as a percentage.

6. List of light sources - Wikipedia

   en.wikipedia.org/wiki/List_of_light_sources

   This is a list of sources of light, the visible part of the electromagnetic spectrum.Light sources produce photons from another energy source, such as heat, chemical reactions, or conversion of mass or a different frequency of electromagnetic energy, and include light bulbs and stars like the Sun. Reflectors (such as the moon, cat's eyes, and mirrors) do not actually produce the light that ...

7. Costco Rumors Swirl About a Big Change Coming to the ... - AOL

   www.aol.com/costco-rumors-swirl-big-change...

   The food court might be one of the most beloved parts of a Costco trip. From the $1.50 hot dog combo to the whole pepperoni pizzas, the food is fresh, hot, and inexpensive. Rumors are swirling ...