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Backup light source used in power outages
An emergency light is a battery-backed lighting device that switches on automatically when a building experiences a power outage. In the United States
Emergency_light
Visual warning lights fitted to a vehicle
may be dedicated emergency lights, such as a beacon or a lightbar, or modified stock lighting, such as a wig-wag or hideaway light, and are additional
Emergency_vehicle_lighting
American medical drama television series (1972–1977)
Emergency! is an American action-adventure medical drama television series jointly produced by Mark VII Limited and Universal Television. Debuting on
Emergency!
Device producing regular flashes of light
between 1886 and 1894. Emergency vehicle lighting Flicker (light), the study of directly visible change in brightness of a light source Flicker fusion
Strobe_light
World's longest-lasting light bulb
The Centennial Light is an incandescent light bulb recognized as the oldest known operating light bulb. It was first illuminated in 1901, and has only
Centennial_Light
Human-powered flashlight
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
Mechanically powered flashlight
Mechanically_powered_flashlight
Electrical device with an electric lamp
camping or emergency lights. Permanent lighting fixtures are directly wired. Movable lamps have a plug and cord that plugs into a wall socket. Light fixtures
Light_fixture
Self-contained, short-term light source
exploration, and concerts. Glow sticks are also used for light in power outage, military and emergency services applications. Industrial uses include marine
Glow_stick
Church officer
security (locking doors, operating security system, etc.), and safety (emergency light/exit sign testing, first aid kit maintenance, etc.). Logistics for
Sexton_(office)
Type of stage lighting once used in theatres and music halls
Limelight (also known as Drummond light or calcium light) is a non-electric type of stage lighting that was once used in theatres and music halls. An intense
Limelight
Type of lightbulb
Edison light bulbs, also known as filament light bulbs and retroactively referred to as antique light bulbs or vintage light bulbs, are either carbon-
Edison_light_bulb
Device for producing light from electricity
An electric light, lamp, or light bulb is an electrical device that produces light from electricity. It is the most common form of artificial lighting
Electric_light
Safety lamp used on the UK rail network
services as emergency warning lights at the scene of traffic collisions. A version of the bardic lamp was developed as a portable emergency light. It would
Bardic_lamp
Decorative lamp
glass vessel. The vessel is placed on a lamp base with an incandescent light bulb. The heat causes temporary reductions in the wax's density and the
Lava_lamp
Light tank/tankette
amphibious light tanks. They were rejected by the U.S. Marine Corps in 1939, but after the attack on Pearl Harbor they were exported and used as an emergency light
Marmon–Herrington_CTLS
Pathway out of a structure designed for use during emergency evacuations
An emergency exit (also known as a fire exit) is a special exit used during emergencies in a building or other structure such as fires. The combined use
Emergency_exit
Lights on a vehicle indicating position, heading, and status
A navigation light, also known as a running or position light, is a source of illumination on a watercraft, aircraft or spacecraft, meant to give information
Navigation_light
Lamp that produces light by an electric arc
An arc lamp or arc light is a lamp that produces light by an electric arc (also called a voltaic arc). The carbon arc light, which consists of an arc between
Arc_lamp
Carbon arc lamp
A Klieg light is an intense carbon arc lamp especially used in filmmaking. It is named after inventor John Kliegl and his brother Anton Kliegl. Klieg
Klieg_light
1975–1977 state of emergency in India under Prime Minister Indira Gandhi
The Emergency in India was a 21 month period from 1975 to 1977 when prime minister Indira Gandhi declared a state of emergency across India by citing internal
The_Emergency_(India)
Deliberate use of light to achieve practical or aesthetic effects
deliberate use of light to achieve practical or aesthetic effects. Lighting includes the use of both artificial light sources like lamps and light fixtures, as
Lighting
Small light fixture used to provide dim illumination during the night
without requiring a major light to be switched on, for avoiding tripping over stairs, obstacles, or pets, or to mark an emergency exit. Exit signs often
Nightlight
Oil lamp with a gravity feed
introduced to Thomas Jefferson in Paris in 1784 and according to him gave off "a light equal to six or eight candles." These new lamps, much more complex and costly
Argand_lamp
Sign towards the nearest building exit
aircraft, or boat) marking the location of the closest emergency exit to be used in an emergency that necessitates rapid evacuation. Most fire, building
Exit_sign
Flashlight used in conjunction with a firearm
A tactical light or weapon light is a flashlight used in conjunction with a firearm to aid low-light target identification, allowing the user to simultaneously
Tactical_light
Devices and processes that produce light
sources of light, the visible part of the electromagnetic spectrum. It focuses on primary light sources (which emit light) rather than secondary light sources
List_of_light_sources
Candle made by dipping a rush in fat or grease
grease. For several centuries, rushlights were a common source of artificial light for poor people throughout the British Isles. They were extremely inexpensive
Rushlight
Light fixture that emits long-wave ultraviolet light and very little visible light
called a UV-A light, Wood's lamp, or ultraviolet light, is a lamp that emits long-wave (UV-A) ultraviolet light and very little visible light. One type of
Blacklight
Use of gaseous tritium to create visible light
generate light is called radioluminescence. As tritium illumination requires no electrical energy, it has found wide use in applications such as emergency exit
Tritium_radioluminescence
Equipment used by emergency vehicles
able to treat a red traffic light or stop sign as a give way, or be permitted to break the speed limit. However, emergency vehicles usually are not able
Emergency_vehicle_equipment
Type of electric gas-discharge lamp
is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. Two varieties of such lamps
Sodium-vapor_lamp
Vehicle used by emergency services, typically with emergency lights and sirens
traffic light or exceeding the speed limit; however, this is almost always done with emergency lights and sirens on, to alert traffic that the emergency vehicle
Emergency_vehicle
Signaling device
lights, the emergency light signals for automobiles. It stands out from other beacons due to its automatic ignition by magnetism: the flashing light is activated
Help_Flash
Portable hand-held electric light
rechargeable battery that supplies current to a light source. Such flashlights can be useful during an emergency, when utility power and batteries may not be
Flashlight
Acetylene-burning lamps
and thus the amount of light it produces. This type of lamp generally has a reflector behind the flame to help project the light forward. An acetylene
Carbide_lamp
less complex incident scenarios. It is commonly marked with a green emergency light, so as to be distinguished from a distance. Incident command post (ICP)
Incident_Command_Post
Topics referred to by the same term
Structures, structural analysis software Emergency Light System, emergency lighting installed on emergency vehicles Els (Streu), a river in Germany El
ELS
Emergency telephone and shut-off switch
A Blue Light Station is a combined emergency telephone and emergency power-off switch in rapid transit stations and other points along electrified railways
Blue_light_station
Form of transistor that emits light
A light-emitting transistor or LET is a form of transistor that emits light. Higher efficiency than light-emitting diode (LED) is possible.[citation needed]
Light-emitting_transistor
Stick with a flaming end used as a source of light
is a stick with combustible material at one end which can be used as a light source or to set something on fire. Torches have been used throughout history
Torch
Bubbling decorative light
A bubble light is a decorative device consisting of a liquid-filled vial that is heated and illuminated by an incandescent light bulb. Because of the
Bubble_light
Artistic light bulb manufacturer
Aerolux Light Corporation was a manufacturer of artful gas-discharge light bulbs from the 1930s through the 1970s. Aerolux made these bulbs in a factory
Aerolux_Light_Corporation
Electric lighting using rarefied gas
colored light. The color of the light depends on the gas in the tube. Neon lights were named for neon, a noble gas which gives off a popular orange light, but
Neon_lighting
Signalling device to control competing flows of traffic
in any direction" (like the "green" of a normal traffic light), "stop, unless the emergency brake is needed" (equal to "amber"), and "stop" (equal to
Traffic_light
Electric light that produces light using LEDs
An LED lamp or LED light is an electric light that produces light using light-emitting diodes (LEDs). LED lamps are significantly more energy-efficient
LED_lamp
Incandescent lamp variety
Department of Fire and Emergency Services recommends that homeowners consider instead using cooler-running compact fluorescent lamps or light-emitting diode lamps
Halogen_lamp
1948–1960 British colonial war in Malaya
The Malayan Emergency, also known as the Anti–British National Liberation War, (1948–1960) was a guerrilla war fought in Malaya between communist pro-independence
Malayan_Emergency
Lighting to aid plant growth
A grow light is an electric light that can help plants grow. Grow lights either attempt to provide a light spectrum similar to that of the sun, or to
Grow_light
Brand of paraffin lamp
products for camping and outdoor use. Petromax is reliable and efficient light source but only with proper use and well maintained. Typical problems leading
Petromax
Lighting fixture set into a ceiling or similar overhead surface
A recessed light or downlight (also pot light in Canadian English, sometimes can light (for canister light) in American English) is a light fixture that
Recessed_light
Practical physics application
Light-emitting diodes (LEDs) produce light (or infrared radiation) by the recombination of electrons and electron holes in a semiconductor, a process called
Light-emitting_diode_physics
Wick embedded in solid flammable substance
wax, or another flammable solid substance such as tallow, that provides light, and in some cases, a fragrance. A candle can also provide heat or a method
Candle
Lighthouse in Alaska, United States
Island adjacent to Sumner Strait in Southeast Alaska. The first attempt to light these waters was an acetylene lantern placed on the Spanish Islands, just
Cape_Decision_Light
Marker buoy warning of a wreck
milliseconds. An emergency wreck mark may also have the word "WRECK" painted on it. No other navigation mark uses the colour blue or uses blue light. The International
Emergency_wreck_buoy
Phrases used over a public address system
Hospital emergency codes are coded messages often announced over a public address system of a hospital to alert staff to various classes of on-site emergencies
Hospital_emergency_codes
Teeth surgery
A dental emergency is an issue involving the teeth and supporting tissues that are of high importance to be treated by the relevant professional. Dental
Dental_emergency
Lighthouse
(17 mi; 28 km) from the lighthouse. Up until August 2013, a backup, emergency light was mounted below the main beacon that would flash every 10 seconds
Presque_Isle_Light
Oil or ghee-based lamp used in religious rituals of Indian origin
enlightenment, prosperity, knowledge and wisdom. Diyas represent the triumph of light over dark, good over evil with the most notable example of this being on
Diya_(lamp)
Light source using an electric arc through mercury vapor
gas-discharge lamp that uses an electric arc through vaporized mercury to produce light. The arc discharge is generally confined to a small fused quartz arc tube
Mercury-vapor_lamp
Optical and electrical phenomenon
material emits light in response to the passage of an electric current or to a strong electric field. This is distinct from black body light emission resulting
Electroluminescence
Outdoor light fixture
A yard light or garden lantern is a free standing exterior light fixture in gardens and landscaped settings. They are usually illuminated by electricity
Yard_light
Semiconductor light source
buses, trams, and ferries. One-color light is well suited for traffic lights and signals, exit signs, emergency vehicle lighting, ships' navigation lights
Light-emitting_diode
Fluorescent lamps with folded tubes, often with built-in ballast
compact fluorescent light, energy-saving light and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent light bulb; some types
Compact_fluorescent_lamp
Property of light sources related to black-body radiation
is a parameter describing the color of a visible light source by comparing it to the color of light emitted by an idealized opaque, non-reflective body
Color_temperature
Raised source of light beside a road or path
A street light, light pole, lamp pole, lamppost, streetlamp, light standard, or lamp standard is a raised source of light on the edge of a road or path
Street_light
Topics referred to by the same term
engine light, to indicate malfunction of a computerized engine management system Warning Light, an American ambient music project Emergency light This disambiguation
Warning_light
Spontaneous emission of light by a substance
be simply defined as any emission of visible electromagnetic radiation (light) not ascribable directly to incandescence. Incandescence emerges at high
Luminescence
Vehicle equipped for transporting and care of people
during the transport. Ambulances are used to respond to medical emergencies by emergency medical services (EMS), and can rapidly transport paramedics and
Ambulance
Type of gravity-powered lamp used for third world countries
GravityLight was a gravity-powered lamp manufactured until 2019. It was designed by the company Deciwatt for use in developing or third-world nations
GravityLight
Ultraviolet C light-emitting device
or sterilizer lamp) is an electric light that produces ultraviolet C (UVC) light. This short-wave ultraviolet light disrupts DNA base pairing, causing
Germicidal_lamp
Form of illumination
artificial source of light. When artificial, the back light is usually placed directly behind the subject in a 4-point lighting setup. A back light, which lights
Backlighting (lighting design)
Backlighting_(lighting_design)
List of episodes from the 1970s television show, "Emergency!"
The television series Emergency! originally aired from January 15, 1972, to May 28, 1977. Six seasons aired, with a total of 122 episodes, followed by
List_of_Emergency!_episodes
Decorative lighting used at Christmastime
Christmas trees were decorated with candles, which symbolized Christ being the light of the world. The Christmas trees were brought by Christians into their
Christmas_lights
Decorative electrical device
insulator, giving the appearance of multiple constant beams of colored light. Plasma balls were popular as novelty items in the 1980s. The plasma lamp
Plasma_globe
American municipal fire department
department provides fire suppression services, technical rescue services, emergency medical response services, and hazardous materials response services to
Los_Angeles_Fire_Department
Light ergonomics is the relationship between the light source and the individual. Poor light can be divided into the following: Individual or socio-cultural
Light_ergonomics
Bright light which impairs vision
difficulty of seeing in the presence of bright light such as direct or reflected sunlight or artificial light such as car headlamps at night. Because of this
Glare_(vision)
Urban area with a high concentration of sex-related businesses
A red-light district or pleasure district is a part of an urban area where a concentration of prostitution and sex-oriented businesses, such as sex shops
Red-light_district
Portable lighting device
enclosure for the light source – historically usually a candle, a wick in oil, or a heated mesh, and often a battery-powered light in modern times – to
Lantern
Type of lamp
A metal-halide lamp is an electrical lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides (compounds
Metal-halide_lamp
Effect of artificial light on ecosystems
Ecological light pollution is the effect of artificial light on individual organisms and on the structure of ecosystems as a whole. The effect that artificial
Ecological_light_pollution
Lamp using fluorescence to produce light
mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, to produce ultraviolet
Fluorescent_lamp
Gas discharge lamp that produces intense white light
an electric light that produces light by passing electricity through ionized xenon gas at high pressure. It produces a bright white light to simulate
Xenon_arc_lamp
Electric light bulb with a resistively heated wire filament
An incandescent light bulb, also known as an incandescent lamp or incandescent light globe, is an electric light that produces illumination by Joule heating
Incandescent_light_bulb
which is why they are used (for example) as farming, construction and emergency works implement. The device works with its own electric generator or with
Light_mast
Capacitive light source in the form of a wire
applications—vehicle and structure decoration, safety and emergency lighting, toys, clothing etc.—much as rope light or Christmas lights are often used. Unlike these
Electroluminescent_wire
Type of electric lamp
halogen lamp within a quartz or hard glass envelope. A PAR lamp consists of a light source, with lens and a parabolic reflector with a smooth aluminium surface
Parabolic aluminized reflector
Parabolic_aluminized_reflector
Lighthouse on the Isle of Man
The four emergency lamps on each face are also connected in series in sets of two. Power is provided by emergency batteries. The emergency light is a 200
Douglas_Head_Lighthouse
Intense focused beam lamp for improving visual detection
lamp) with a mirrored parabolic reflector to project a powerful beam of light of approximately parallel rays in a particular direction. It is usually
Searchlight
called "the beautiful and most brilliant light". The following year, a group of investors formed the Gas Light Company of Baltimore, which was authorized
History of street lighting in the United States
History_of_street_lighting_in_the_United_States
2022 film by Carey Williams
Emergency is a 2022 American thriller comedy-drama film directed by Carey Williams and written by K.D. Dávila, based on their 2018 short film of the same
Emergency_(2022_film)
Lighthouse in Alaska, United States
The Cape Hinchinbrook Light is a lighthouse located near the southern end of Hinchinbrook Island adjacent to Prince William Sound, in Alaska, United States
Cape_Hinchinbrook_Light
Lighthouse in California, United States
List specifies its light characteristic as being a pair of two white flashes, repeating that pair every 20 seconds. An emergency light of reduced intensity
Point_Vicente_Lighthouse
Emission of light as a result of a chemical reaction
the emission of light (luminescence) as the result of a chemical reaction, i.e. a chemical reaction resulting in a flash or glow of light. A standard example
Chemiluminescence
Suite of advanced driver-assistance system features
an "Emergency Light Detection Update" for Autopilot in September 2021 which was intended to detect "flashing emergency vehicle lights in low light conditions
Tesla_Autopilot
Lighting system
is a highly efficient full-spectrum electrodeless lighting system whose light is generated by sulfur plasma that has been excited by microwave radiation
Sulfur_lamp
Lighting system of a motor vehicle
illuminated "Taxi" sign, a light to signal that they are ready to take passengers, or off duty, or an emergency panic light the driver can activate in
Automotive_lighting
often colloquially known as a "blue light run". From 1993 to 1998, a television documentary following Britain's emergency services was titled Blues and Twos
Emergency vehicle equipment in the United Kingdom
Emergency_vehicle_equipment_in_the_United_Kingdom
Lighthouse
The Burrows Island Light is a lighthouse on the western tip of Burrows Island, facing Rosario Strait, near Anacortes, in Skagit County, Washington. After
Burrows_Island_Light
Use of a light source to simulate sunlight
Artificial sunlight is the use of a light source to simulate sunlight where the unique characteristics of sunlight are needed, but where sufficient natural
Artificial_sunlight
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