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2. Flicker (light) - Wikipedia

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

   In visual perception, flicker is a human-visible change in luminance of an illuminated surface or light source which can be due to fluctuations of the light source itself, or due to external causes such as due to rapid fluctuations in the voltage of the power supply (power-line flicker) or incompatibility with an external dimmer.

3. Gas-discharge lamp - Wikipedia

   en.wikipedia.org/wiki/Gas-discharge_lamp

   A flicker light bulb, flicker flame light bulb or flicker glow lamp is a gas-discharge lamp which produces light by ionizing a gas, usually neon mixed with helium and a small amount of nitrogen gas, by an electric current passing through two flame shaped electrode screens coated with partially decomposed barium azide. The ionized gas moves ...

4. Fluorescent lamps and health - Wikipedia

   en.wikipedia.org/wiki/Fluorescent_lamps_and_health

   New lighting systems have not used magnetic ballasts since the turn of the century, however some older installations still remain. Fluorescent lamps with magnetic ballasts flicker at a normally unnoticeable frequency of 100 or 120 Hz (twice of the utility frequency; the lamp is lit on both the positive and negative half-wave of a cycle).

5. 10 Best Electric Menorahs to Light Up Your Home This Hanukkah

   www.aol.com/10-best-electric-menorahs-light...

   It comes with nine flickering bulbs that will light up any home. Shop Now. Chrome Plated Electric Menorah. amazon.com. $119.00. Aviv Judaica. Large LED Electric Hanukkah Menorah.

6. How to Choose the Right Size, Type, and Color of Christmas ...

   www.aol.com/lifestyle/choose-size-type-color...

   The size of the light bulb on your string lights will have a large impact on how your final look appears. ... these flicker-free lights will deliver long-lasting brightness. Related: How to Hang ...

7. Fluorescent lamp - Wikipedia

   en.wikipedia.org/wiki/Fluorescent_lamp

   Fluorescent lamps with magnetic ballasts flicker at a normally unnoticeable frequency of 100 or 120 Hz and this flickering can cause problems for some individuals with light sensitivity; [69] they are listed as problematic for some individuals with autism, epilepsy, [70] lupus, [71] chronic fatigue syndrome, Lyme disease, [72] and vertigo. [73]