This is a sample page from the course "Physics of Light" -- an online
course (or professional development opportunity) for elementary and
middle school teachers. For more information about this course and the
program to which it belongs, see the page
http://www.pa.uky.edu/sciworks/intro.htm"
Shadows
The branch of science and technology that studies light is called
optics.
Optics investigations can reveal important properties of light. A
knowledge of properties of light and of materials can be applied to control
light in many situations. One of the most basic areas of optics is
shadows.
In this section we will find out how shadows work.