Making use of waves

Abstract

After completing this chapter you should

• understand the functions of parts of the eye

• understand the eye’s means of focusing

• be able to explain long and short sight, and ways of correcting for them

• know the parts of a camera and how they function

• understand how optical and radio telescopes are helpful to astronomers

• understand some uses of radio waves, radar, microwaves and infrared radiation

• know that there are different kinds of earthquake waves

• understand how ultrasonic waves can be used.