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2. Light effects on circadian rhythm - Wikipedia

   en.wikipedia.org/wiki/Light_effects_on_circadian...

   If daylight is not taken into account all workstations require lighting at the value of 150 equivalent melanopic lux or greater. [ 27 ] Living environments, which are bedrooms, bathrooms and rooms with windows, at least one fixture must provide a melanopic lux value of at least 200 during the day and a melanopic lux value less than 50 during ...

3. Color temperature - Wikipedia

   en.wikipedia.org/wiki/Color_temperature

   An incandescent lamp's light is thermal radiation, and the bulb approximates an ideal black-body radiator, so its color temperature is essentially the temperature of the filament. Thus a relatively low temperature emits a dull red and a high temperature emits the almost white of the traditional incandescent light bulb.

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. How to Know Which Light Bulb Temperature to Choose - AOL

   www.aol.com/know-light-bulb-temperature-choose...

   These common lighting qualms have to do with the color temperature of the light bulbs. While many people may look at wattage (i.e., the amount of energy that a bulb uses to produce light) before ...

6. Lumen maintenance - Wikipedia

   en.wikipedia.org/wiki/Lumen_maintenance

   LM-80 is for inorganic LED-based packages, arrays and modules, not LED bulbs or luminaries. It mainly measures: Lumen maintenance of light source in different temperature; Color maintenance of light source in different temperature. LM-80 specifies a minimum testing period of 6,000 hours, with 10,000 hours being the preferred testing period.

7. LED circuit - Wikipedia

   en.wikipedia.org/wiki/LED_circuit

   In CC drivers, the voltage changes while the current stays the same. CC drivers are used when the electrical load of the LED circuit is either unknown or fluctuates, for example, a lighting circuit where a variable number of LED lamp fixtures may be installed. As an LED heats up, its voltage drop decreases (band gap decrease [1]). This can ...