0
Why is light from a low pressure sodium vapor lamp unpleasant?
Wiki User
∙ 15y ago
My city invested in changing over street lighting to low sodium pressure only to end up replacing it all a few years later. The problems with low sodium pressure is two fold. Most objectionable is that the light source washes out color distinctions to the point that it is difficult to accurately describe a vehicle's color. The second objection relates to the difficulty of controlling the light output with the usual lens types. The low sodium pressure lights ended up producing annoying light diffusion to residences. The plus side is that this source of lighting is the most economical as the light output is very high.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What alkali metal is used in street lights?
Sodium (chem symbol = Na) Mercury vapor is also used in street lights. Low pressure sodium vapor street lights are amber/yellow in color, high pressure sodium lights are white and mercury vapor lights glow blueish white.
What is the vapor pressure of Avgas?
Gasoline - Vapour Pressure (absolute): < 107 kPa @ 38 °C
What metal is used in electric light bulbs?
This is different depending on the type of bulb. Most bulbs copper or kovar (or other alloy with thermal expansion rate matching that of glass) wires are used for connections.tungsten wire is used in incandescent bulbs for the filamentmercury liquid (which evaporates to form mercury vapor) is used in fluorescent bulbs and tubes as well as mercury vapor streetlight bulbssodium vapor is used in both high pressure sodium and low pressure sodium streetlight bulbstungsten studs are used as discharge electrodes in HID car headlight bulbsetc.
Is refrigerant leaving a compressor in a cars air conditioning system high pressure vapor high pressure liquid or low pressure vapor?
high pressure vapor
What happens to vapor pressure if sugar is added to a solution?
When you add a teaspoon of honey to water with vapor pressure, it will reduce the vapor pressure. The sugar in the honey leads to the pressure going down.
Light given off by electric discharge through sodium vapor?
The light given by sodium vapor depends on whether it is a low-pressure or high-pressure lighting system. Low pressure sodium lamps produce a yellow-green light and are less-common today, while high-pressure sodium-halogen produces an orange light. Both types of sodium lighting uses the element sodium, which is heated by a current flow until it becomes luminescent.
How many lumens are in a 400 watt mercury vapor light bulb?
A 400 watt Mercury vapor light bulb produces roughly 23,000 lumens. In comparison to a 400 watt metal haloid and or high-pressure sodium, not as good. Metal haliod and high-pressure sodium produces 30,000 lumens.
How will the vapor pressure of pure water compare to an aqueous solution of sodium chloride?
The solution's vapor pressure will be lower.
Who invented the sodium vapor light?
Thomas Edison
What alkali metal is used in street lights?
Sodium (chem symbol = Na) Mercury vapor is also used in street lights. Low pressure sodium vapor street lights are amber/yellow in color, high pressure sodium lights are white and mercury vapor lights glow blueish white.
Working of sodium-vapor lamp?
It gives yellow light
How many watts does a Sodium Vapor light bulb have?
sixty
What happens to Vapor pressure of water when mixed with sodium chloride?
your mom happens
What does a sodium vapor light bulb cost?
£20 35w £24 55w
Is argon gas a part of a high pressure sodium lamp?
From Wikipedia, high pressure sodium lamps use xenon, whilst low pressure ones use neon with a small amount of argon. See entry for 'sodium vapor lamps'
Why is the street light yellow not white?
They are yellow because they are sodium lamps, using sodium vapor. They are very efficient in terms of visible light output per watt.
What do you call an unpleasant vapor or smell?
Effluvial
