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The functions of tears include lubricating the eyes (basal tears), removing irritants (reflex tears), and also aiding the immune system. [3] Tears also occur as a part of the body's natural pain response. [4] Emotional secretion of tears may serve a biological function by excreting stress-inducing hormones built up through times of emotional ...
One from the previous RM to replace the former lightbulb with an LED light bulb, despite rejection from 107 users. One uninvolved editor to open a dispute resolution case over the switch to an LED bulb. Two to mediate the dispute. One to close the thread due to excessive personal attacks. One to open an articles for deletion discussion about ...
A glow stick, also known as a light stick, chem light, light wand, light rod, and rave light, is a self-contained, short-term light-source. It consists of a translucent plastic tube containing isolated substances that, when combined, make light through chemiluminescence. The light cannot be turned off and can be used only once.
Lightbulb jokes are often responses to contemporary events. [14] For example, the lightbulb may not need to be changed at all due to ongoing power outages. [15]The Village Voice held a $200 lightbulb joke contest around the time of the Iran hostage crisis, with the winning joke being: [16]
An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a filament that is heated until it glows. The filament is enclosed in a glass bulb that is either evacuated or filled with inert gas to protect the filament from oxidation .
Some mechanically powered flashlights include additional functions and features beyond just a source of light. Models sold as emergency lights have additional functions intended to be used in emergencies, such as flashing red or yellow lights for roadside emergencies, sirens, and radios such as AM/FM, weather, or shortwave radios.
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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 ...