Discuss Several Disadvantages of Refractor Versus Reflector Telescopes

question 13

Essay

Discuss several disadvantages of refractor versus reflector telescopes.

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Definitions:

Hygroscopic

The ability of a substance to absorb moisture from the air.

Non-servo Drum Brake

A type of drum brake system that relies on a simpler mechanism without servo action, often found in older or less complex vehicles.

Leading Shoe

A component of drum brake systems, it refers to the brake shoe positioned towards the front of the vehicle that comes into contact with the brake drum first when brakes are applied.

Energized

Describes an electrical component that is carrying current or a system that is under power.