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  2. Illuminating Engineering Society - Wikipedia

    en.wikipedia.org/wiki/Illuminating_Engineering...

    The Illuminating Engineering Society (IES), is an industry-backed, not-for-profit, learned society that was founded in New York City on January 10, 1906. [1] The IES's stated mission is "to improve the lighted environment by bringing together those with lighting knowledge and by translating that knowledge into actions that benefit the public".

  3. Daylight harvesting - Wikipedia

    en.wikipedia.org/wiki/Daylight_harvesting

    Daylight harvesting systems are typically designed to maintain a minimum recommended light level. [1] This light level will vary according to the needs and use of the space; for example, the commonly recommended light level for offices is 500 Lux (or around 50 foot-candles) on the desktop.

  4. Lumen maintenance - Wikipedia

    en.wikipedia.org/wiki/Lumen_maintenance

    IESNA LM-80 is the Department of Energy (DOE) approved testing method for measuring lumen depreciation of solid-state (LED) light sources, arrays and modules. [8] The Illuminating Engineering Society (IES) and the Department of Energy Solid State Lighting Standards Development group worked together to create the LM-80 test criteria.

  5. Daylight factor - Wikipedia

    en.wikipedia.org/wiki/Daylight_factor

    Undertaken using the IES Radiance software Module. Architects and engineers use daylight factors in architecture and building design to assess the internal natural lighting levels as perceived on working planes or surfaces. They use this information to determine if light is sufficient for occupants to carry out normal activities.

  6. The best skin care routine for your 60s, according to ... - AOL

    www.aol.com/lifestyle/best-skin-care-routine-for...

    The Solawave Radiant Renewal Wand is a red light therapy device that is best used daily when paired with your preferred serums to stimulate collagen, improve the appearance of fine lines and ...

  7. Standard illuminant - Wikipedia

    en.wikipedia.org/wiki/Standard_illuminant

    The same discrepancy applies to all illuminants in the D series—D 50, D 55, D 65, D 75 —and can be "rectified" by multiplying the nominal color temperature by ; for example … = for D 65. To determine the D-series SPD (S D ) that corresponds to those coordinates, the coefficients M 1 and M 2 of the characteristic vectors S 1 and S 2 are ...

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Should You Use Ice or Heat for Your Back Pain? - AOL

    www.aol.com/ice-heat-back-pain-133000090.html

    Experts explain whether ice or heat for back pain will lead to better relief, and the best time to use each.