Total Internal Reflection
Learning Objectives By the end of this section, you will be able to: A good-quality mirror may reflect more than 90% of the light that falls on it, absorbing the rest. But it would be useful to have a mirror…
The Law of Refraction
Learning Objectives By the end of this section, you will be able to: It is easy to notice some odd things when looking into a fish tank. For example, you may see the same fish appearing to be in two…
The Law of Reflection
Learning Objectives By the end of this section, you will be able to: Whenever we look into a mirror, or squint at sunlight glinting from a lake, we are seeing a reflection. When you look at this page, too, you…
The Ray Aspect of Light
Learning Objectives By the end of this section, you will be able to: There are three ways in which light can travel from a source to another location. (See Figure 25.3.) It can come directly from the source through empty space,…
Introduction to Geometric Optics
Figure 25.1 Image seen as a result of reflection of light on a plane smooth surface. (credit: NASA Goddard Photo and Video, via Flickr) Chapter Outline 25.1 The Ray Aspect of Light 25.2 The Law of Reflection 25.3 The Law of Refraction 25.4 Total Internal Reflection…
Section Summary
24.1 Maxwell’s Equations: Electromagnetic Waves Predicted and Observed 24.2 Production of Electromagnetic Waves 24.3 The Electromagnetic Spectrum 24.4 Energy in Electromagnetic Waves
Energy in Electromagnetic Waves
Learning Objectives By the end of this section, you will be able to: Anyone who has used a microwave oven knows there is energy in electromagnetic waves. Sometimes this energy is obvious, such as in the warmth of the summer sun.…
The Electromagnetic Spectrum
Learning Objectives By the end of this section, you will be able to: In this module we examine how electromagnetic waves are classified into categories such as radio, infrared, ultraviolet, and so on, so that we can understand some of…
Production of Electromagnetic Waves
Learning Objectives By the end of this section, you will be able to: We can get a good understanding of electromagnetic waves (EM) by considering how they are produced. Whenever a current varies, associated electric and magnetic fields vary, moving out from…
Maxwell Equations: Electromagnetic Waves Predicted and Observed
Learning Objectives By the end of this section, you will be able to: The Scotsman James Clerk Maxwell (1831–1879) is regarded as the greatest theoretical physicist of the 19th century. (See Figure 24.3.) Although he died young, Maxwell not only formulated…