Projectors are devices
that throw light or images on a distant surfaces for the view of
an audience. Depending on the design and purpose, projectors are
classified in many different types.
Some commonly known projectors
include overhead projector, movie projector, transparency projector,
digital projector, slide projector, and many more.
Have you ever wondered how a
projector is made. Did you know that you can make a simple projector
for less than $25 cost of material?