A New Generation of Ground-Based Telescopes Is Currently Being Built

question 107

Multiple Choice

A new generation of ground-based telescopes is currently being built that overcomes the limitations of the older large telescopes. Some of these new telescopes

• A)use segmented mirrors.
• B)use mirrors that are very thin.
• C)use active optics to control the shape of the mirror.
• D)All of the other choices are correct.
• E)None of the other choices are correct.

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Definitions:

Universal Joints

Mechanical connections between rotating shafts, typically in vehicle drivetrains, allowing for transmission of torque and rotary motion even at angles.

Grease

A lubricant with a thicker consistency compared to oil, used in various mechanical systems to reduce friction and wear between moving parts.

Single-Piece Driveshaft

A type of driveshaft constructed as one solid unit, offering enhanced strength and reliability in transmitting power from the engine to the wheels.

Maximum Length

The greatest extent measured from end to end of an object, material, or entity.