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  2. Philips Hue - Wikipedia

    en.wikipedia.org/wiki/Philips_Hue

    Philips Hue is a line of color-changing LED lamps and white bulbs which can be controlled wirelessly. The Philips Hue line of bulbs was the first smart bulb of its kind on the market. [3] The lamps are currently created and manufactured by Signify N.V., formerly the Philips Lighting division of Royal Philips N.V. [1] [4]

  3. Stroboscopic effect - Wikipedia

    en.wikipedia.org/wiki/Stroboscopic_effect

    Intentional light variations are applied for warning, signalling (e.g. traffic-light signalling, flashing aviation light signals), entertainment (like stage lighting) with the purpose that flicker is perceived by people. Generally, the light output of lighting equipment may also have residual unintentional light level modulations due to the ...

  4. Light characteristic - Wikipedia

    en.wikipedia.org/wiki/Light_characteristic

    An occulting light is a rhythmic light in which the duration of light in each period is longer than the total duration of darkness. In other words, it is the opposite to a flashing light where the total duration of darkness is longer than the duration of light. It has the appearance of flashing off, rather than flashing on.

  5. How to use your phone's night mode to capture the northern lights

    www.aol.com/heres-night-mode-try-capture...

    The map of the aurora forecast shows that northern parts of the country have a better chance of seeing the auroras. A view line that shows "the southern extent of where aurora might be seen on the ...

  6. Flicker vertigo - Wikipedia

    en.wikipedia.org/wiki/Flicker_vertigo

    Flicker vertigo, sometimes called the Bucha effect, is "an imbalance in brain-cell activity caused by exposure to low-frequency flickering (or flashing) of a relatively bright light." [ 1 ] It is a disorientation -, vertigo -, and nausea -inducing effect of a strobe light flashing at 1 Hz to 20 Hz, approximately the frequency of human brainwaves .

  7. Strobe light - Wikipedia

    en.wikipedia.org/wiki/Strobe_light

    Internally triggered Strobotrons (light-output optimized thyratrons) were available [9] as well as flood-beam-CRT-type, grid-controlled Vacuum stroboscopic light sources with fast phosphors. [10] The strobe light was popularized on the club scene during the 1960s when it was used to reproduce and enhance the effects of LSD trips. Ken Kesey used ...

  8. Abney effect - Wikipedia

    en.wikipedia.org/wiki/Abney_effect

    Abney hypothesized that the resulting change in hue that occurred was due to the red light and green light that were components of the white light being added. He also thought that the blue light that also comprises the white light beam was a negligible factor that had no effect on the apparent hue shift.

  9. List of LED failure modes - Wikipedia

    en.wikipedia.org/wiki/List_of_LED_failure_modes

    Differentiated phosphor degeneration: The different phosphors used in white LEDs tend to degrade with heat and age, but at different rates causing changes in the produced light color, for example, purple and pink LEDs often use an organic phosphor formulation which may degrade after just a few hours of operation causing a major shift in output ...