An animation illustrating the effect of strobe light

A strobe light or stroboscopic lamp, commonly called a strobe, is a device used to produce regular flashes of light. Image File history File links Strobe. ... Image File history File links Strobe. ... Prism splitting light Light is electromagnetic radiation with a wavelength that is visible to the eye (visible light) or, in a technical or scientific context, electromagnetic radiation of any wavelength. ...

Strobe lights have many uses, including scientific and industrial applications, but are particularly popular in discotheques where they are used to give an illusion of slow motion (cf. temporal aliasing). Other well-known applications are in alarm systems, theatrical lighting (most notably to simulate lightning), and as high-visibility navigation lights, as well as still widely being used in law enforcement and other emergency vehicles, though they are slowly being replaced by LED technology in this application as they themselves largely replaced halogen lighting in this application. Strobe light has also been used to see the movements of the vocal cords in slow motion during speech, a procedure known as video-stroboscopy Discothèque redirects here. ... Temporal aliasing is the technical term for a phenomenon also known as the stroboscopic effect or the wagon-wheel effect. ... For the British anti-radiation missile, see ALARM. For the Welsh alternative rock band, see The Alarm. ... It has been suggested that Drama (art form) be merged into this article or section. ... // Intracloud lightning, sheet lightning, anvil crawlers Intracloud lightning is the most common type of lightning which occurs completely inside one cumulonimbus cloud, and is commonly called an anvil crawler. ... There are several traditions of navigation. ... External links LEd Category: TeX ... The incandescent light bulb uses a glowing wire filament heated to white-hot by electrical resistance, to generate light (a process known as thermal radiation). ...

A typical commercial strobe light has a flash energy in the region of 10 to 150 joules, and discharge times as short as a few milliseconds, often resulting in a flash power of several kilowatts. Larger strobe lights can be used in “continuous” mode, producing extremely intense illumination. The joule (symbol: J) is the SI unit of energy, or work with base units of kg·m²/s². // Definition The joule is a derived unit defined as the work done or energy required, to exert a force of one newton for a distance of one metre, so the same... The kilowatt (symbol: kW) is a unit for measuring power, equal to one thousand watts. ...

The light source is commonly a xenon flash lamp, which has a complex spectrum and a colour temperature of approximately 5,600 kelvins. In order to obtain coloured light, coloured gels must be used. Xenon flash lamp being fired. ... White light is commonly described by its color temperature. ... The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. ... A Color Gel, Color Filter, or simply Gel is a translucent or transparent coloured material that is used in theatre to colour light. ...

The origin of strobe lighting dates to 1931, when Harold Eugene Edgerton employed a flashing lamp to make an improved stroboscope for the study of moving objects, eventually resulting in dramatic photographs of objects such as bullets in flight. 1931 (MCMXXXI) was a common year starting on Thursday (link is to a full 1931 calendar). ... Shadowgraph of a . ... A stroboscope , also known as a strobe, is an instrument used to make a cyclically moving object appear to be slow-moving or stationary. ... Photography is the process of making pictures by means of the action of light. ...

Strobe lights and epilepsy

Strobe lighting can trigger seizures in photosensitive epilepsy, thus most strobe lights on sale to the public are factory-limited to 10~12 flashes per second in their internal oscillators, although externally triggered strobe lights will often flash as frequently as possible. At a frequency of 10 Hz, 65% of affected people are still at risk. The British Health and Safety Executive recommend that a net flash rate for a bank of strobe lights does not exceed 5 flashes per second, at which only 5% of photosensitive epileptics are at risk. It also recommends that no strobing effect continue for more than 30 seconds due to the potential for discomfort and disorientation. This article is about the medical condition. ... Photosensitive epilepsy is a form of epilepsy in which seizures are triggered by flickering light or other visual stimuli, such as bold or moving patterns. ... Sine waves of various frequencies; the lower waves have higher frequencies than those above. ... The hertz (symbol: Hz) is the SI unit of frequency. ... The Health and Safety Executive (HSE), reporting to the Health and Safety Commission, is the British government body responsible for the regulation of risks to health and safety in the UK. It was created as a result of the Health and Safety at Work, etc, Act 1974, and has since...

Related Terms

• Jerkiness — discontinuity in motion pictures, also called strobing
• Photographic flash — often referred to as a strobe light
• Strobing — a dance form