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Red and blue emergency lights on a fire engine in Canberra, Australia. Emergency vehicle lighting, also known as simply emergency lighting or emergency lights, is a type of vehicle lighting used to visually announce a vehicle's presence to other road users. A sub-type of emergency vehicle equipment, emergency vehicle lighting is generally used ...
This is a list of emoticons or textual portrayals of a writer's moods or facial expressions in the form of icons. Originally, these icons consisted of ASCII art, and later, Shift JIS art and Unicode art. In recent times, graphical icons, both static and animated, have joined the traditional text-based emoticons; these are commonly known as ...
In computer jargon, blinkenlights are diagnostic lights on front panels of old mainframe computers. More recently the term applies to status lights of modern network hardware (modems, network hubs, etc.). [1] Blinkenlights disappeared from more recent computers for a number of reasons, the most important being the fact that with faster CPUs a ...
Neon lights are a type of cold cathode gas-discharge light. A neon tube is a sealed glass tube with a metal electrode at each end, filled with one of a number of gases at low pressure. A high potential of several thousand volts applied to the electrodes ionizes the gas in the tube, causing it to emit colored light. The color of the light ...
An embedded flashing-light system or an in-pavement flashing-light system is a type of device that is used at existing or new pedestrian crosswalks to warn drivers of oncoming pedestrian traffic. The device usually consists of LED lights that are embedded into the roadway alongside the crosswalk and are oriented to face oncoming traffic. When a ...
The flat bottom surfaces of the anvil and post embedded inside the epoxy act as anchors, to prevent the conductors from being forcefully pulled out via mechanical strain or vibration. A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron ...
The Xbox 360 video game console is subject to a number of technical problems and failures that can render it unusable. However, many of the issues can be identified by a series of glowing red lights flashing on the face of the console; the three flashing red lights nicknamed the " Red Ring of Death " or the " RRoD " [1][2] being the most infamous.
A quick light, abbreviated "Q", is a special case of a flashing light with a high frequency (more than 30 [3] or 50 [2] per minute). If the sequence of flashes is interrupted by regularly repeated eclipses of constant and long duration, the light is denoted "interrupted quick", abbreviated "I.Q".