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In a metal halide light, the electricity heats a metal filament to a high temperature creating an extremely bright light. Metal ions burn off. A gas of the halide group (chlorine, bromine, iodine) reacts with the metal ions that have burned off and redeposit them on the filament. Because the filament is constantly being rebuilt, it can be brighter than a regular light bulb. Also it heats the gas to the point where the gasses give off light. So both the filament and the gasses give off light.

With a Mercury vapor light, mercury vapor is heated until it gives off ultraviolet light. The filament only serves to heat the mercury. It does not give off light. This light is used to excite phosphrus and other chemicals on the edge of the bulb. Those chemicals glow in the visible light spectrum. As a result, they illuminate.

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15y ago
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8y ago

Slightly oversimplifying it:

  • a mercury vapor lamp is a type of arc lamp where the arc passes through vaporized mercury
  • a metal halide lamp is an extended life version of an incandescent filament lamp, the life of the filament is extended by a halogen gas fill that scavenges metal that has vaporized from the filament (which causes the filament to thin and weaken) preventing it from depositing on the glass envelope (darkening it) and the metal halide compounds produced decompose on contact with the hot filament depositing metal (building back up the weakest parts of the filament) and regenerating the halogen gas fill
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Q: What is the difference between metal halide and mercury vapour lights?
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Which light is brighter Metal Halide or mercury Vapor?

Metal Halide lights are generally brighter than mercury vapor lights. Metal halide lights produce a higher quality and more natural light, making them a popular choice for outdoor lighting in stadiums, parking lots, and other large commercial spaces. Mercury vapor lights tend to have a bluish-green tint and are less bright compared to metal halide lights.


What is metal halide lighting?

Metal halide lighting is a type of high-intensity discharge (HID) lighting that produces light by passing an electric current through a mixture of mercury and metal halide gases. It is commonly used in commercial and industrial settings due to its high efficiency and bright, white light.


Are metal halide street lights an environmentally friendly option?

Yes many people believe that metal halide street lights are environment friendly. Here are some sites about these lights. www.fairfaxcounty.gov news releases 2009 , enduraliteled.ca/municipal


Where can I get more information online about metal halide street lights?

Yes you can get more information on line about metal halide lights at the following sites. Here are some sites you can look at www.eskimo.com/~jrterry/lampspage.html


What are HID lights?

There are four types of HID lights Metal Halide, High/Low Pressure Sodium, Mercury Vapour, Zenon. Common uses include Street lighting, car head lights, sports field lighting, fish tank lighting. HID stands for high intensity discharge.


Where can one purchase metal halide lights?

Metal halide lights are available in many shapes, sizes and specifications at home furnishing stores including Home Depot and Lowe's or online at Buy Lighting and Venture Lighting.


What is the difference between sodium vapor and mercury vapor streetlight?

Sodium vapor streetlights emit a warm yellow-orange light, while mercury vapor streetlights emit a bluish-white light. Sodium vapor lights are more energy-efficient and have a longer lifespan compared to mercury vapor lights. Additionally, sodium vapor lights are better at preserving night vision and reducing light pollution.


What does a metal halide light do to a plant?

Metal halide lights emit a broad spectrum of light that closely mimics natural sunlight, making them suitable for promoting overall plant growth and development, especially during the vegetative stage. The blue spectrum produced by metal halide lights is beneficial for encouraging leafy growth and enhancing photosynthesis in plants.


How much does it cost a month to run metal halide lights for fish tanks?

100 rupees


Is mercury used in lights?

Yes, mercury is commonly used in fluorescent and high-intensity discharge (HID) lamps. Mercury vapor lamps, for example, rely on mercury to produce ultraviolet light, which then gets converted into visible light when it interacts with a phosphor coating inside the lamp. Proper disposal of these lamps is important to prevent environmental contamination.


Why does 95 mercury sable have no dash lights and no tail lights?

It does have both tail lights as well as dash lights


What is the difference between flush and semi-flush mounted ceiling lights?

The difference between flush and semi-flush mounted ceiling lights is that one of them can be mounted on the ceiling and the other one can be mounted elsewhere.