Radio Telescopes Have an Advantage Over Optical Telescopes in That

question 21

Multiple Choice

Radio telescopes have an advantage over optical telescopes in that they can be used ___________.

• A) to detect visual imagery of pulsars
• B) in all four seasons
• C) to detect very short wave radiation
• D) during daylight hours

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Definitions:

Pitch Cone

In gear design, it is the imaginary cone that represents the underlying angular surface of the teeth, where the pitch surface of an infinitely small gear would be.

Conical Surface

A surface that extends outward and away in all directions from a common point, resembling the shape of a cone.

Frustum

A truncated shape that results from cutting a pyramid or cone with a plane parallel to its base, leaving two bases, one smaller than the other.

Pitch Angle

The angle between the helix of a thread or gear on a cylindrical shaft and an imaginary line perpendicular to the shaft's axis.