1-41
SUMMARY
Now that you have completed this chapter, let’s review some of the new terms, concepts, and ideas
you have learned. You should have a thorough understanding of these principles before moving on to
chapter 2.
WAVE PROPAGATION is an invisible force that enables man to communicate over long
distances. Wave transmission can take many forms, such as LIGHT, SOUND, and RADIO.
LIGHT is a form of wave motion that can be seen. Heat cannot normally be seen, but can be felt.
Radio waves cannot be seen or felt.
WAVE MOTION can be seen in action by throwing a pebble into a pool of still water. The ripples
that move toward the edge of the pool demonstrate the PROPAGATION theory.
The TRANSVERSE WAVE is a type of wave motion. Radio, light, and heat waves are examples of
transverse waves.
