enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Photosensitive epilepsy - Wikipedia

    en.wikipedia.org/wiki/Photosensitive_epilepsy

    Photosensitive epilepsy (PSE) is a form of epilepsy in which seizures are triggered by visual stimuli that form patterns in time or space, such as flashing lights, bold, regular patterns, or regular moving patterns. PSE affects approximately one in 4,000 people (5% of those with epilepsy).

  3. Photopsia - Wikipedia

    en.wikipedia.org/wiki/Photopsia

    Photopsia is the presence of perceived flashes of light in the field of vision. It is most commonly associated with: [4] posterior vitreous detachment; migraine aura (ocular migraine / retinal migraine) migraine aura without headache; scintillating scotoma; retinal break or detachment; occipital lobe infarction (similar to occipital stroke)

  4. 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.

  5. The mystery of the flashing lights at the White House has ...

    www.aol.com/article/news/2017/05/31/the-mystery...

    The flashing red lights were spotted in President Trump's second floor residence on Sunday night, causing concern and sparking chatter on social media. The mystery of the flashing lights at the ...

  6. Apple TV - Wikipedia

    en.wikipedia.org/wiki/Apple_TV

    The Apple TV is designed to work with the Apple Wireless Keyboard or the Apple Magic Keyboard. [citation needed] Apple TV with and without tvOS supports closed captioning, so the deaf or hard of hearing can properly watch TV episodes and feature-length movies. Compatible episodes and movies are denoted with a CC (closed captioning) or SDH ...

  7. Flicker (screen) - Wikipedia

    en.wikipedia.org/wiki/Flicker_(screen)

    Flicker is necessary for a film-based movie projector to block the light as the film is moved from one frame to the next. The standard framerate of 24 fps produces very obvious flicker, so even very early movie projectors [example needed] added additional vanes to the rotating shutter to block light even when the film was not moving. Most ...

  8. Light characteristic - Wikipedia

    en.wikipedia.org/wiki/Light_characteristic

    An example of a complete light characteristic is "Gp Oc(3) W 10s 15m 10M". This indicates that the light is a group occulting light in which a group of three eclipses repeat every 10 seconds; the light is white; the light is 15 metres above the chart datum and the nominal range is 10 nautical miles.

  9. LED-backlit LCD - Wikipedia

    en.wikipedia.org/wiki/LED-backlit_LCD

    An Apple iPod Touch disassembled to show the array of white-edge LEDs powered on with the device. An LED-backlit LCD is a liquid-crystal display that uses LEDs for backlighting instead of traditional cold cathode fluorescent (CCFL) backlighting. [1]