Unit 1.2 Flashcards by Rock S

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Q

What is the approximate speed of light in a vacuum?

A

Approximately 186,000 miles per second.

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Q

What type of reflection occurs when light strikes a mirror?

A

Specular

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Q

What type of mediums transmit s light?

A

Transparent and translucent

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Q

At what angle does a normal ray of light strike a medium?

A

Perpendicular or 90 degrees

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Q

What problem does dispersion create in a lens design?

A

The various components of light that make up the total image will not focus at the same plane.

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Q

Explain three things that must occur for an object to have a green appearance.

A

Light source must contain green wavelengths
Object must reflect green wavelengths
Object must absorb other wavelengths

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Q

What do we call light that vibrates in only one plane?

A

Polarized

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