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Open flame lamps could ignite flammable gases which collected in mines, causing explosions; safety lamps were developed to enclose the flame to prevent it from igniting the explosive gases. Flame safety lamps have been replaced for lighting in mining with sealed explosion-proof electric lights, but continue to be used to detect gases.
Dialight plc is a British-based electronics business specialising in light-emitting diode lighting for hazardous locations. It is headquartered in London and operates in North America , the United Kingdom, mainland Europe, Australia, Asia and South America.
A light switch may cause a small, harmless spark when switched on or off. In an ordinary household this is of no concern, but if a flammable atmosphere is present, the arc might start an explosion. In many industrial, commercial, and scientific settings, the presence of such an atmosphere is a common, or at least commonly possible, occurrence.
One-color light is well suited for traffic lights and signals, exit signs, emergency vehicle lighting, ships' navigation lights, and LED-based Christmas lights Because of their long life, fast switching times, and visibility in broad daylight due to their high output and focus, LEDs have been used in automotive brake lights and turn signals.
LED lighting on an ambulance in Toronto. Light-emitting diodes are small, completely solid state, very power-efficient, long-lasting (as they have no filaments to burn out) and can be seen very easily even at great distances and in sunlight. LED emergency lights entered standard use around the 2000s and 2010s, replacing most rotating and strobe ...
[citation needed] Before the advent of high-intensity light-emitting diode (LED) illumination with lithium-ion batteries, carbide also had two important advantages over the alternative of miners electric lamps. Miner's lamps were intended to last for the duration of a standard working shift, whilst major caving explorations could be much longer ...
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