powerpoint presentation

1. Spherical
Mirror
Ms. G. Martin

2. Curved mirrors are made up of spherical surfaces.
Spherical mirror is a curved mirror whose reflecting
surface is a part of an imaginary sphere having a radius.
Spherical mirrors can be thought of as a ortion of a
sphere that was sliced away and then silvered on one
sides to form a reflecting surface.
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5. Two types of spherical mirrors:
1. concave spherical mirror – The inner surface of curved
mirror is reflecting. Are usually used in cosmetics products to
magnify the image of the viewer’s face.
2. convex spherical mirror – The outer surface of a
curved mirror is reflecting. Concave mirrors are used on cars and
trucks to produce a smaller images but provide a bigger area of
view or wide angle view.
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6. The following are important terms in understanding the
parts of spherical mirrors:
C = the center of curvature – The point in the center of the
sphere from which the mirror was sliced.
V = the vertex – The point on the mirror’s surface where the
principal axis meets the mirror. It is the geometric center of the
mirror.
P = principal axis or optic axis The line passing through the
center of the curvature and the center of the mirror.
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7. F = focal point (focus) – Midway between the vertex and the
center of curvature is known as focal point.
f = focal length = The distance from the mirror to the focal point.
Since the focal point is the midpoint of the line segment
adjoining the vertex and the center of the curvature, the focal
length would be one-half the radius of curvature.
r = radius of the curvature = The distance from the vertex to the
center of the curvature. The radius of curvature is the radius of
the sphere from which the mirror was cut.
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Thank
You!