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2. Luminous efficacy - Wikipedia

   en.wikipedia.org/wiki/Luminous_efficacy

   The former sense is sometimes called luminous efficacy of radiation, [4] and the latter luminous efficacy of a light source [5] or overall luminous efficacy. [ 6 ] [ 7 ] Not all wavelengths of light are equally visible, or equally effective at stimulating human vision, due to the spectral sensitivity of the human eye ; radiation in the infrared ...

3. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   LED lamps are often made with arrays of surface mount LED modules. A significant difference from other light sources is that the light is more directional. An LED is a "Lambertian" emitter, producing a cone of light with half-power points about 60° from the axis. A laser diode is another form of LED emitter, but produces light by a different ...

4. List of automotive light bulb types - Wikipedia

   en.wikipedia.org/wiki/List_of_automotive_light...

   Standard and higher-wattage versions available with halogen burner S1 BA20d 2 6 V & 12 V: 25 / 25 W ... Replaceable Light Sources for Vehicle Headlamps; Bulb Type ...

5. Halogen lamp - Wikipedia

   en.wikipedia.org/wiki/Halogen_lamp

   A halogen lamp operating in its fitting with the protecting glass removed A halogen lamp behind a round UV filter. A separate filter is included with some halogen light fixtures to remove UV light. Halogen lamp (105 W) for replacement purposes with an E27 screw base A close-up of a halogen lamp capsule

6. Luminous flux - Wikipedia

   en.wikipedia.org/wiki/Luminous_flux

   Luminous flux is often used as an objective measure of the useful light emitted by a light source, and is typically reported on the packaging for light bulbs, although it is not always prominent. Consumers commonly compare the luminous flux of different light bulbs since it provides an estimate of the apparent amount of light the bulb will ...

7. What is the difference between LED, QLED and OLED?

   www.aol.com/difference-between-led-qled-oled...

   These sets are generally a step-up in colour quality compared to standard LED TVs – placing a “quantum dot” layer between the backlight and the screen to filter the light in a way that ...