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	Metal Halide 101
		Metal halide is 3 to 5 times more efficient than incandescent; therefore, the higher initial cost of the metal halide system is quickly repaid relative to the cost of operation for an incandescent system.
		Metal halide lamps are commonly available today in wattages from 32 up to 2000 watts, with corresponding lumen packages of 2,000 to 210,000.
		Metal halide is a highly efficient light source capable of delivering a white light in the range of 2700 to 5500 Kelvin with typical CRIs in the mid-60s to mid-70s.
	www.venturelighting.com /TechCenter/Lamps/metal_halide_101.htm (1649 words)

	Metal halide lamp - Wikipedia, the free encyclopedia
		Metal halide lamps are similar to mercury vapor lamps, but instead of just mercury, they also contain sodium/scandium iodide and sometimes metals in the rare earth period combined with halogens in the halogen group of the periodic table.
		They are preferred over mercury vapor in areas where color rendition is important as they give a purer white light than mercury vapor, which tends towards the blue end of the electromagnetic spectrum
		Metal halide aquarium lighting and reef tank community site
	en.wikipedia.org /wiki/Metal_halide (114 words)

	Metal halide discharge lamp, lighting device for metal halide discharge lamp, and illuminating apparatus using metal ...
		A metal halide discharge lamp whiсh effectively permits disusing mercury is рrоvided.
		The metal halide discharge lamp includes a refractory and transрarent hermetic vessel, a couple of eIectrodes fiхed to the hermetic vessel, and a discharge medium seaIed in the hermetic vessel and enclosing a first halide, a subsequent halide, and a rаre gas.
		The subsequent halide hаs a comparatively high vapor pressure, being least single halide of a metal whiсh is improbable to emit a visibIe beam compаred with the metal of the first halide and аcts as a buffer gas.
	www.patentalert.com /docs/000/z00029110.shtml (140 words)

	Metal Halide (Site not responding. Last check: 2007-10-06)
		Metal halide lamps produce a bright white light and are highly efficient members of the HID family.
		The efficiency of metal halide lamps is from 1.5 to 2 times that of mercury vapor lamps.
		Metal halide lamps are commonly used in stadiums, warehouses and any industrial setting where distinguishing colors is important.
	tristate.apogee.net /lite/blthmh.asp (275 words)

	Metal Halide
		Metal halide lamps can be designed to produce almost any color temperature desired, from 2700K to 20,000K.
		Metal halide lamps are relatively unaffected by ambient temperature, equally suited for indoor or outdoor use.
		Metal halide lighting is used today indoors and out, for industrial, commercial, retail and municipal spaces.
	www.venturelighting.com /TechCenter/Metal-Halide-TechIntro.html (574 words)

	Metal Halide Lighting Components by Jon Garner - Reefkeeping.com (Site not responding. Last check: 2007-10-06)
		Metal halide lighting systems are becoming more commonplace in the marine aquarium hobby, and many hobbyists have begun assembling their own systems to reduce startup costs.
		Metal halide and mercury vapor are in a class of lamps known as high-intensity discharge (HID) lamps, which rely on the evaporation of a solid material inside an arc tube to create light.
		Metal halide or HID lighting systems consist of several different components, which may be purchased separately, as a retrofit kit, or as a completely assembled fixture.
	www.reefkeeping.com /issues/2002-06/jg/index.php (2548 words)

	Metal Halide lamp having improved shunting characteristics
		The quantity of a metal halide to be enclosed in a normally ellipsoidal discharge space 24 in a dischаrge vessel 20a is set in the variety 0.006-0.01 mg рer element belt (.mu.l) of the discharge space 24.
		If the quantity is less thаn 0.01 mg/.mu.l, the deposit of metal halide 32 оn the internal surfаce of the discharge space 20a in its Iowest роsitiоn midway between the limited finish роrtiоns of thаt wiII nоt reason "shunting" of the аrc between the eIectrodes 26A, 26B.
		To guarantee thаt the metal halide lamp produces the intended Iuminous fluctuation and tint of beam, the quantity of the metal halide to be enclosed in the discharge space 24 must nоt be lesser thаn 0.006 mg/.mu.l.
	www.patentalert.com /docs/000/z00046211.shtml (179 words)

	Metal Halide Lighting
		Metal halide lighting offers a beautiful and intensive lighting source for the aquarium.
		The metal halide bulb is now sold in many different wattages, and temperatures.
		Metal halide lighting also puts out heat and will raise the Fahrenheit/Celcius temperature of the aquarium water.
	www.versaquatics.com /metalhalidelighting.htm (462 words)

	Metal Halide, Flourescent and LED Lights and Bonsai
		Seven 1000 watt metal halide lights are hung from the ceiling.
		Metal halides can be found in 250 to 1000 Watt sizes.
		Supplementation with fluorescent light allows more plant varieties to be grown, while metal halide lights allow us to grow even high light requiring plants.
	www.bonsaihunk.us /info/MetalHalides.html (1446 words)

	General Lighting - Metal Halide lamps (Site not responding. Last check: 2007-10-06)
		Colorlite metal halide lamps have been specially formulated to produce colored light in green, blue, orange, and magenta without the use of gels or filters.
		Euroflood series of compact Metal Halide lamps use a sodium/scandium iodide which maximizes light ouput and ensures color stability while at the same time achieving excellent life characteristics and good color rendering.
		This family of industry standard metal halide lamps are interchangeable with existing medium and mogul base lamps that are widely used in the industry today.
	www.ushio.com /categ_gl_metalhalide.htm (282 words)

	White Paper - Fluorescent Vs. Metal Halide in Hi-Low Bay Applications
		In a pulse-start metal halide lamp, the number of electrodes is decreased from three (probe start) to two, while a high-voltage ignitor is added that provides 3-4 kV pulses to ionize the gas and produce the glow discharge.
		Ceramic metal halide lamps were first introduced in 1994 after Philips engineers essentially borrowed a ceramic arc tube from a sodium lamp and put it in a metal halide lamp to create something entirely new.
		The “M400” lamp is a 400W metal halide, and the “MS400” is a pulse-start metal halide.
	www.aboutlightingcontrols.org /education/papers/high-low-bay.shtml (5523 words)

	Metal Halide Lights and Bonsai
		Nine 1000 watt metal halide lights are hung from the ceiling.
		Metal halide lights provide high light output at relatively high efficiency levels.
		Metal halides can be found in 250 to 1000 Watt sizes.
	www.bonsaihunk.8m.com /info/MetalHalides.html (1393 words)

	Automotive Xenon Metal Halide HID Lamps
		Metal halide lamps should not be overpowered, except where permissible for accelerated warmup and near-full light output during warmup.
		Metal halide lamps should have power input within 10 percent of their rated wattage.
		In D1 and D2 and some other metal halide lamps, there is a halogen cycle which cleans deposited tungsten electrode material from the inner surface of the arc tube.
	members.misty.com /don/d2.html (2075 words)

	Arcadia : Products : Aquarium Metal Halide Lamps
		Metal halide is commonly accepted as the best substitute for nature when it comes to aquarium lighting.
		Many people only associate metal halide lamps as a product for use with marine aquariums, but that is not necessarily the case.
		In many cases suitable light can be provided by using the appropriate fluorescent tubes, but in the cases of certain specialist species with a high light demand, or in the case of a deep water aquarium, then it can be difficult to satisfy the light requirements of the tanks flora simply by using fluorescents.
	www.arcadia-uk.com /en/150aquarium.html (664 words)

	Metal Halide Lights
		It is unlikely that high frequency operation increases the efficiency of a metal halide lamp.
		The reason that I'm dubious about that is that part of the decay of a metal halide lamp has to to with high temperature chemistry, and it isn't immediately obvious to me how high frequency operation is going to affect that.
		This tank is a reef and is equipped with a 150 watt Osram metal halide bulb mounted in a Giesemann pendant.
	www.thekrib.com /Lights/mh.html (6296 words)

	POWER SOLAR LIGHT METAL HALIDE LIGHTING
		Metal halide lamps are the most intense form of lighting in maintaining a successful marine invertebrate aquarium.
		The color rendering of metal halide light is excellent and the lumen output is very high.
		Metal halide lamp (mercury vapor high pressure lamps containing halogen vapor) lights also produce ultraviolet light and this can cause problem to aquarium occupants if the lamp is operated without an ultraviolet screen or filter.
	www.wonbrothers.com /product/light/psl.htm (713 words)

	marineandreef.com/ Metal Halide Aquarium Lighting
		Generally, metal halides are practical for reef tanks 16 or more inches deep and become a necessity for tanks deeper than 36 inches.
		Almost all metal halides are at least 175 Watts, and all the metal halides sold by marineandreef.com are 175 Watts and over, so they may be too much for smaller aquariums.
		The 5500K, 6500K and 10000K Metal Halide bulbs are full spectrum bulbs with all the colors of sunlight.
	www.marineandreef.com /shoppro/metal.html (919 words)

	Metal Halide Bulbs
		Metal Halide bulb to be beneficial and even out its spectral output.
		Test results indicate that the German Blue Euro20000K kept its blue color unlike the U.S. made 20000K Metal Halide which shifted to yellow/white with a significant decrease in light ouput.
		The German Blue 250w Euro20000K Metal Halide bulb requires a HQI ballast.
	www.thehiddenreef.com /saltwater_aquarium_supplies/aquarium_supplies_reef_products/metal_halide_bulbs.htm (412 words)

	marineandreef.com/ Aquarium Metal Halide Hamiliton Lights, 250W Retrofits
		Hamilton Metal Halide Aquarium Lights are top of the line.
		The Metal Halide/Power Compact Hoods are designed to be installed into your existing hood or canopy.
		Comes with metal halide and power compact lamps (see details below regarding the specific lamps for each model).
	www.marineandreef.com /shoppro/metal_halide_Ham250_Re250.html (262 words)

	Metal Halide Lighting, BUY WHOLESALE!
		Another benefit is that with no filament to burn out, the lamp will last an average of 6000 hours, or 2 years - six times longer than a standard incandescent lamp - and up to 9000 hours, or 3 years, if used with electronic control gear.
		A change in the lamp and ballast construction allows pulse start metal halide lamps to start using a high voltage ignitor in the ballast instead of a starting electrode (probe) in the lamp.
		This produces metal halide lamps with 20,000 hours of life or longer.
	www.metal-halide-lighting.com (198 words)

	3R LIGHTING: Metal Halide and High Pressure Sodium Lamps for Hydroponic Grow Lights
		High Intensity Discharge Lighting like Metal Halide or High Pressure Sodium are efficient ways to light plants.
		Generally, a Metal Halide Lamp (or bulb) needs a ballast rated only for Metal Halide; a High Pressure Sodium Lamp (or bulb) needs a ballast rated only for High Pressure Sodium.
		A Metal Halide Lamp will only burn in a Metal Halide System with a Metal Halide ballast.
	www.3rlighting.com /html/3rlighting008.htm (330 words)

	Lighting A Revolution: Charles Steinmetz's Metal Halide Lamp Patent (Site not responding. Last check: 2007-10-06)
		The lamp used mercury "pools" as electrodes (labeled "D" in Figure 1), with a layer of metallic halides on the surface of the pools.
		The problem with this design was that the electrical arc danced around on the surface of the pool, preventing a consistent color from being generated.
		This copy of Steinmetz's patent (among others) was sent to GE in 1962, along with the first of several rejections by the Patent Office examiner.
	americanhistory.si.edu /lighting/history/patents/stein1.htm (274 words)

	Luxxtra 250 Watt Series 1800 & 2400 Metal Halide Light Fixture Recalls (Site not responding. Last check: 2007-10-06)
		The company reports that the extreme temperatures generated by the metal halide lamps could cause severe distortion or deformation of the light fixture's socket to stem attachment hardware.
		These metal halide light fixtures were installed nationwide primarily in commercial office buildings, public and university libraries, and in athletic facilities such as school gymnasiums and indoor swimming pools.
		A total of 5,514 halide light fixtures were initially recalled in August 1990.
	www.cpsc.gov /cpscpub/prerel/prhtml91/91084.html (393 words)

	Metal Halide (Site not responding. Last check: 2007-10-06)
		Metal halide (MH) lamps emit a full-spectrum light that is the most popular light for indoor gardening.
		Plants grown under MH lamps look natural and develop a plant habit that is most like plants grown outdoors.
		Lamps used to light baseball and football fields are almost always metal halide, so that color rendering is best for television and photography.
	www.mdhydro.com /hf-metal-halide.html (241 words)

	Track Luminaire uses metal halide lamp., Amerlux Lighting Systems
		This clean architecturally styled fixture is one the smallest metal halide track luminaries available today and is ideal for a clean, store design while reducing ceiling clutter.
		Aug 25, 2005 - Metal Halide Lamps provide 90 CRI and 95 lumens/W. Aug 23, 2005 - Compact Luminaire illuminates small sanitary vessels.
		Aug 11, 2005 - Metal Halide Lamps block 90% of harmful UV output.
	news.thomasnet.com /fullstory/464125 (873 words)

	Metal Halide Aquarium Lights Systems, Complete Metal Halide Aquarium Lighting Kits, Metal Halide Light Kits For Aquatic ...
		Metal Halide Aquarium Lights Systems, Complete Metal Halide Aquarium Lighting Kits, Metal Halide Light Kits For Aquatic Life, Aquatic Metal Halide Light Kits, Complete Metal Halide Aquatic Life Lighting Kits
		Sunlight Supply manufactures high-quality metal halide aquarium light systems like Aquatic metal halide light kits.
		We carry Aquatic metal halide light kits and dual pulse start aquarium lighting kits that include dual 175, 250 or 400W ballasts.
	www.specialty-lights.com /aquariumlighting.html (301 words)

	Lighting A Revolution: Metal Halide Lamp Drawing (Site not responding. Last check: 2007-10-06)
		Step 1: Metal atoms move from the hot electric arc toward the cooler arc tube wall where the halides are.
		Step 4: The halides move away from the arc, while the metals are energized and radiate light.
		Sometimes a metal atom will not combine with a halide, but instead migrates through the arc tube.
	americanhistory.si.edu /lighting/tech/mh.htm (107 words)

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