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2. Window fan - Wikipedia

   en.wikipedia.org/wiki/Window_fan

   A small twin window fan with thermostat A large single whole-house window fan with three-speed control and intake/exhaust switch The same fan, in operation. A window fan is a fan designed to be placed inside the frame of a window. Window fans have been used for many decades to maintain comfortable temperatures and ventilation within one's home ...

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. Superluminescent diode - Wikipedia

   en.wikipedia.org/wiki/Superluminescent_diode

   A superluminescent diode (SLED or SLD) is an edge-emitting semiconductor light source based on superluminescence.It combines the high power and brightness of laser diodes with the low coherence of conventional light-emitting diodes.

5. The best Cyber Monday appliance deals at Home Depot, Lowe's ...

   www.aol.com/lifestyle/the-best-cyber-monday...

   Some of the best Black Friday ad Cyber Monday sales are taking place at the likes of Home Depot, Lowe's, AJ Madison and Best Buy, and we have your guide to them all right here in one place. So ...

6. Luminous efficacy - Wikipedia

   en.wikipedia.org/wiki/Luminous_efficacy

   Luminous efficacy of radiation measures the fraction of electromagnetic power which is useful for lighting. It is obtained by dividing the luminous flux by the radiant flux . [ 4 ] Light wavelengths outside the visible spectrum reduce luminous efficacy, because they contribute to the radiant flux, while the luminous flux of such light is zero.

7. LED filament - Wikipedia

   en.wikipedia.org/wiki/LED_filament

   A 230-volt LED filament light bulb, with a B22 base. The filaments are visible as the four yellow vertical lines. A LED filament light bulb is a LED lamp which is designed to resemble a traditional incandescent light bulb with visible filaments for aesthetic and light distribution purposes, but with the high efficiency of light-emitting diodes (LEDs).