5/17/11
Post date: May 17, 2011 7:59:44 PM
Bell ringer: What are curved mirrors and lenses used for?
Return quizzes
Mirror and lens terminology
Object - the physical "thing" that we are making a picture of, the source of the light rays
Object distance (do) - the distance between the object and the mirror or lens
Object height (ho) - how tall the actual object is
Image - the picture that we produce using the lens or mirror, the end-point of the light rays
Image distance (di) - the distance between the image and lens or mirror
Image height (hi) - how tall the image is
Focus - the point in space where parallel beams of light converge after contacting the mirror or lens
Focal length (f) - the distance between the focus and the mirror or lens
Center of curvature (C) - (for mirrors only) the center of the sphere that the mirror was cut out of, always twice as far from the mirror's surface as the focus is.
Concave - the surface curves away from the light source (like looking into a cave)
Convex - the surface curves toward the light source
Mirror and lens lab - due Monday
Final projects due tomorrow!!!