Lens and Slides
Christine Amarila
Alysia Goco
HOCUS FOCUS
By: Alysia Goco and Christine Amarila
What Are Lenses?
A lens is a curved piece of
glass or plastic that redirects beams of light bouncing off of an object to
form a real image - an image that looks just like the object in front of the
lens.
As a ray of light enters a
lens, it is refracted twice - when it enters the lens and when it exits it. The
light ray changes directions at these two boundaries. The light rays are
refracted such that they form images.
Converging Lens
A ray traveling through the
exact center of the lens will continue to travel in the same direction after
refracting through the lens.
Refraction by a Converging Lens
Rays traveling parallel to
the principal axis will refract through the lens and converge to a point