Flashcards in Chapter 7light Deck (25):
light reflected in random directions off objects
light interacts with matter whar three ways
reflection, diffuse reflection, absorbtion
incoming light is called
the incident ray and reflected rays angles are related how?
perpendicular to point of reflection
flat mirrors produce what image
light rays originate from
a real image
in transparent medium light ray do what
refraction depends on
incident angle and index of refraction
index of refraction
ratio of the speed of light in a vacuum to the speed of light in the medium
total internal reflection
refracted angle equals 90o
limit to the angle of incidence
when are light rays reflected internally?
when the critical angle is 90+
red to violet
what special property does a glass prism have?
why does dispersion occur?
the index of refraction is different for each range of colors
light passes through small slits or holes and produces and interference pattern of bright lines and dark zones
bright lines and dark zones
virbrates in one direction only in a plane
what three ways can light be polarized?
by certain materials, by reflection or by scattering