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LIFX White 800 (left) and LIFX Original 1000 (right) sitting next to their retail packaging. LIFX (pronounced Life-X) is a line of energy-efficient, multi-color, Wi-Fi enabled, and digital addressable LED light bulbs that can be controlled via a Wi-Fi equipped device such as a smartphone or smartwatch.
Luxo Jr. is a semi-anthropomorphic toy desk lamp character used as the primary mascot of Pixar Animation Studios.He is the protagonist of the short film Luxo Jr. and appears on the production logo of every Pixar film, hopping into view and jumping on the capital letter "I" in "PIXAR" to flatten it ever since 1995.
The bulb's "turn on" voltage V b is higher than its "turn off" voltage V e. This property, called hysteresis , allows the bulb to function as an oscillator. Hysteresis is due to the bulb's negative resistance , the fall in voltage with increasing current after breakdown, [ 7 ] [ 14 ] which is a property of all gas-discharge lamps .
Only roughly 5% of the energy used by an incandescent bulb produces light; the remaining 95% or so is lost as heat. This is why you let an incandescent bulb cool off before unscrewing it.
This, along with the long-life light-emitting diode which does not burn out like an incandescent bulb, give the flashlight a long lifetime, making it a useful emergency light. A disadvantage of many current models is that the supercapacitor cannot store much energy in comparison to a lithium-ion cell, limiting the operating time per charge.
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The original twinkle bulbs were C7½ and some C9¼ incandescent light bulbs with a bimetallic strip. Once the bulb warms up, the strip pulls slightly away from the contact, opening and interrupting the parallel circuit through the bulb and turning it off. The bulb then cools, allowing the strip to bend back and make contact again.
Both types, along with most of the candle-shaped ones, are pinched-off at the tip rather than the base during manufacturing. Most contemporary miniature light bulbs have an internal shunt that is intended to activate when the bulb's filament burns out. The shunt closes the circuit across the bad filament, restoring continuity, which allows the ...