How Might You Distinguish a Sodium-Vapor Street Lamp from a Mercury-Vapor

question 137

Multiple Choice

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

• A)Use binoculars to look for printing adjacent to the bulb.
• B)Look at the street lamps through a spectroscope and match their spectral patterns to their respective atomic spectra.
• C)Ask your local utility company to identify these lamps for you.
• D)The shadows cast from a sodium-vapor street lamp tend to be more diffuse around the edges.

---

Definitions:

Social Partnership

A collaborative relationship between government, employers, and labor unions aimed at addressing economic and social issues in a cooperative rather than confrontational manner.

Union Density Rate

The percentage of workers in a specific area or industry that are members of labor unions.

Voluntarism

The principle or system in which voluntariness is the basis for actions and decisions in an economic or other social system.

Government Policies

Actions or strategies formulated by a government to tackle economic, social, or political issues affecting the country.