Scattered Light in the Atmosphere Is Often Partially Polarised

question 18

Multiple Choice

Scattered light in the atmosphere is often partially polarised.The best way to determine whether or not light from a particular direction in the sky shows polarisation is to:

• A)diffract the light through a single slit.
• B)squint while looking in that direction.
• C)rotate a piece of polaroid film about an axis parallel to the ray while looking through it in that sky direction.
• D)rotate a piece of polaroid film about an axis perpendicular to the ray while looking through it in that sky direction.
• E)reflect the rays from that direction on a shiny metal surface.

---

Definitions:

Slander and Libel

Defamation in two forms: slander, which is spoken defamation, and libel, which is defamation in a fixed medium such as writing or broadcasting.

Indecency

Conduct deemed inappropriate or offensive in a public context, often relating to nudity, sexuality, or impropriety.

Probable Cause

A reasonable ground for presumption of guilt in criminal cases, or the existence of evidence justifying legal action.

Reasonable Cause

A legally sufficient reason to believe that a specific act, condition, or event has occurred, often related to justifying police investigations or actions.