Emission spectrum of an ultraviolet deuterium arc lamp clearly showing characteristic hydrogen emission lines (sharp peaks at 656 nm and 486 nm) and continuum emission in the ~160-400 nm region. The emission spectrum of deuterium differs slightly from that of protium due to the influence of hyperfine interactions, though these effects alter the wavelength of the lines by mere fractions of a nanometer and are too fine to be discerned by the spectrometer used here.
A deuteriumarc lamp or simply deuterium lamp is a low pressuregas discharge light source often used in spectroscopy when a full spectrum (continuous) source of illumination in the ultraviolet region is needed. The origin of the continuum ultraviolet radiation which extends from around 160 nanometers to 400 nanometers arises not from the relatively simple process of decay of atomic excited states ("atomic emission") but instead from "molecular emission" processes, where radiative decay of excited states, in this case of molecular deuterium (D2) cause the effect. This effect is somewhat analogous to the visible light continuum molecular emission of sulfur lamps. Image File history File links Download high resolution version (2715x1816, 68 KB) Summary Spectrum of a deuterium lamp taken with an Ocean Optics HR4000 spectrometer  using a high-OH solarization-resistant fiber optic. ... Image File history File links Download high resolution version (2715x1816, 68 KB) Summary Spectrum of a deuterium lamp taken with an Ocean Optics HR4000 spectrometer  using a high-OH solarization-resistant fiber optic. ... In most modern usages of the word spectrum, there is a unifying theme of between extremes at either end. ... Protium can be several things: In chemistry, protium is the most common isotope of the element hydrogen; that has one proton and no neutrons. ... Hyperfine structure is a small perturbation in the energy levels (or spectral) of atoms due to the proton-electron dipole moment interaction. ... A nanometre (American spelling: nanometer) is 1. ... // Headline text Bold text:For Acoustic uses in spectrographs of sound waves, see below. ... Deuterium, also called heavy hydrogen, is a stable isotope of hydrogen with a natural abundance in the oceans of one atom in 6400 of hydrogen (see VSMOW; the abundance changes slightly from one kind of natural water to another). ... The 300,000-watt Plasma Arc Lamp in the Infrared Processing Center (IPC) at Oak Ridge National Laboratory An arc lamp is a device that produces light by the sparking (or arcing, from voltaic arc or electric arc) of a high current between two carbon rod electrodes. ... Pressure (symbol: p) is the force per unit area acting on a surface in a direction perpendicular to that surface. ...-1... Extremely high resolution spectrum of the Sun showing thousands of elemental absorption lines (fraunhofer lines) Spectroscopy is the study of spectra, that is, the dependence of physical quantities on frequency. ... Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than soft X-rays. ... In quantum mechanics, an excited state of a system (such as an atom, molecule or nucleus) is any quantum state of the system that has a higher energy than the ground state (that is, more energy than the absolute minimum). ... The sulfur lamp is a microwave-powered electrodeless lighting system conceived by engineer Michael Ury, physicist Charles Wood and their colleagues in 1990 and further developed in 1994 by Fusion Lighting (USA), with support from the U.S. Department of Energy. ...
Categories: Lamps | Tools stubs Lighting refers to either artificial light sources such as lamps or to natural illumination of interiors from daylight. ... A lamp, in technical usage, is a replaceable component such as an incandescent light bulb, which is designed to produce light from electricity. ... An incandescent light bulb and its glowing filament. ... An incandescent light bulb and its glowing filament. ... A Parabolic Aluminized Reflector light, or PAR light, is a type of light commonly used in motion picture production when a substantial amount of light is required for a scene. ... Image File history File links Download high resolution version (311x649, 278 KB) Summary I made this from an existing Public Domain JPEG. Licensing File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Spiral compact fluorescent light bulb A compact fluorescent lamp (CFL), also known as a compact fluorescent light bulb or an energy saving lightbulb, is a type of fluorescent lamp that screws into a regular light bulb socket or plugs into a small lighting fixture. ... A compact fluorescent lamp with an integrated electronic ballast A fluorescent lamp is a type of lamp that uses electricity to excite mercury vapor in argon or neon gas, resulting in a plasma that produces short-wave ultraviolet light. ... High-intensity discharge (HID) lamps include the types of electrical lights: mercury vapor, metal halide, high-pressure sodium, low-pressure sodium and less common, xenon short-arc lamps. ... A Mercury-vapor lamp is a gas discharge lamp which uses mercury in an excited state to produce light. ... Metal halide lamps are similar to Mercury vapor lamps, but instead of just mercury, they also contain all metals in the halide group of the periodic table (Hence the name). ... Lighting neon lamp, two 220/230 volt and 110 V neon lamps and a screwdriver with neon lamp inside A neon lamp is a gas discharge lamp containing neon gas (or in types with different colors also other noble gas) at low pressure. ... A sodium vapor lamp is a gas discharge lamp which uses sodium in an excited state to produce light. ... The 300,000-watt Plasma Arc Lamp in the Infrared Processing Center (IPC) at Oak Ridge National Laboratory An arc lamp is a device that produces light by the sparking (or arcing, from voltaic arc or electric arc) of a high current between two carbon rod electrodes. ... Hydrargyrum Medium-Arc Iodide, frequently called just HMI is a mercury-halide discharge short arc lamp with a color temperature of approximately 5600K. The name is derived from Hydrargyrum, an archaic term for mercury while Iodide indicates that iodine is the halogen used to form the active compound. ... 15 kW Xenon short-arc lamp used in IMAX projectors Xenon arc lamps are an artificial light source. ... A Yablochkov candle (sometimes electric candle) is a type of electric carbon arc lamp, invented in 1876 by Pavel Yablochkov. ... Carbide lamps (acetylene lamps) are simple lamps that produce and burn acetylene by reacting calcium carbide with water. ... A collection of lit candles on ornate candlesticks A close-up image of a candle showing the wick and the various regions of the flame. ... Gas lighting is the process of burning piped natural gas or coal gas for illumination. ... Russian wick kerosene lamp. ... Limelight is a type of stage lighting once used in theatres and music halls. ... Antique bronze oil lamp with Christian symbol (replica) An oil lamp is a device used for lighting or for preserving a flame that is fueled by animal, vegetable or mineral oil. ... In contrast with all other electrical lamps that use electrical connections through the lamp envelope to transfer power to the lamp, in electrodeless lamps the power needed to generate light is transferred from the outside of the lamp envelope by means of (electro)magnetic fields. ... Blue, green and red LEDs. ... Fiber Optic strands An optical fiber in American English or fibre in British English is a transparent thin fiber for transmitting light. ... An eight-inch (20 cm) diameter plasma globe The effect of a conducting object (such as a hand) in close proximity to the plasma globe glass The central electrode of a plasma globe. ... Safety lamp is the name of a variety of lamps for safety in coal-mines against coal dust, methane, or firedamp, a highly explosive mixture of natural gas apt to accumulate in them. ...
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