Sodium Vapor

How might you distinguish a sodium vapor street lamp from a mercury vapor steet lamp?


http://en.wikipedia.org/wiki/Sodium_lamp

http://en.wikipedia.org/wiki/Mercury-vapor_lamp

I think you would see colors better with the Mercury Vapor Light


You can distguish them by the color.
Low pressure sodium lamps (now seldom used for lighting) are bright yellow. High pressure sodium lamps are a warm pink-white (because the yellow sodium lines become broadened and Na2 forms).

Mercury vapor lamps are white with a bluish to violet tint.

  1. 👍
  2. 👎
  3. 👁

Respond to this Question

First Name

Your Response

Similar Questions

  1. Calculus

    A man is 6ft tall and is walking at night straight toward a lighted street lamp at a rate of 5 ft/sec. If the lamp is 20 ft above the ground, find the rate at which the length of his shadow is changing.

  2. Physics

    A street lamp weighs 150 N. It is supported by two wires that form an angle of 100° with each other. The tensions in the wires are equal. (a) What is the tension in each wire supporting the street lamp? (b) If the angle between

  3. Chemistry

    A student breaks a thermometer and spills most of the mercury (Hg) onto the floor of a laboratory that measures 15.2 m long, 6.6 m wide, and 2.4 m high. (a) Calculate the mass of mercury vapor (in grams) in the room at 20°C. The

  4. Mathematics

    A boy 1.2m tall, stands 6m away from the foot of a vertical lamp pole 4.2m long. If the lamp is at the tip of the pole, calculate (i) the length of the shadow of the body cast by the lamp (ii) calculate the angle of elevation of

  1. Physics

    A 100 W lamp is connected to 120 V, and its current is measured. A resistor is added to the lamp to reduce the current to half its original value. (a) What is the potential difference across the lamp? (b) How much resistance was

  2. History

    What's the difference between COMECON and COMINIFORM? Thanks in advance! http://en.wikipedia.org/wiki/Comecon http://en.wikipedia.org/wiki/Cominform

  3. math

    A woman 5 ft tall is standing near a street lamp that is 12 ft tall. Find a function that models the length L of her shadow in terms of her distance d from the base of the lamp.

  4. social studies

    what are the type of rocks used to build the agra fort , gate way of india,lotus temple , qutub minar , india gate and jama masjid Read each one carefully: http://en.wikipedia.org/wiki/Agra_Fort

  1. social studies

    the theory that government should not intefere in economic affairs is known as? A) popilism B) supply-side economics C) laissez-faire D) capitalism Here's what Populism is (assume that's what you meant):

  2. History

    What factors motivated King Leopold of Belgium to seek ownership of the Congo region? http://en.wikipedia.org/wiki/L%C3%A9opold_II_of_Belgium Thank you for using the Jiskha Homework Help Forum. Hopefully you have a good history of

  3. chem

    i need help while mercury is very useful in barometers, mercury vapor is toxic. given that mercury has Hvapp=56.9kj/mol and its normal boiling point is 356.7C calculate the vapor pressure mm Hg at room temperature, 25c

  4. us history, need help quick please!!

    i need to make a t-table. i need to know the complaints of the anti-federalists about the congress, executive branch, judiciary branch, and the right of the people, and then the federalist responce to each of these complaints.

You can view more similar questions or ask a new question.