Unit 1.2 Flashcards
(7 cards)
What is the approximate speed of light in a vacuum?
Approximately 186,000 miles per second.
What type of reflection occurs when light strikes a mirror?
Specular
What type of mediums transmit s light?
Transparent and translucent
At what angle does a normal ray of light strike a medium?
Perpendicular or 90 degrees
What problem does dispersion create in a lens design?
The various components of light that make up the total image will not focus at the same plane.
Explain three things that must occur for an object to have a green appearance.
- Light source must contain green wavelengths
- Object must reflect green wavelengths
- Object must absorb other wavelengths
What do we call light that vibrates in only one plane?
Polarized