Chapter 7, Problem 7.1QP

Give a brief wave description of light. What are two characteristics of light waves?

Interpretation Introduction

Interpretation:

The definition of light in terms of wave and properties of light has to be given.

Concept introduction:

Light is defined as wave in form of electromagnetic radiation.  Light has oscillations in electric and magnetic fields and can pass through space.

The distance between any two similar points of a wave is called wavelength

Figure 1

$\text{λ}$ is wavelength.

Frequency is defined as number of wavelengths of a wave that can pass through a point in one second.

Explanation of Solution

To explain: The definition of light in terms of wave and properties of light

• Light is defined as wave in form of electromagnetic radiation.  Light has oscillations in electric and magnetic fields and can pass through space.
• Wave is in form of continuous repeating oscillation in any physical field or matter.
• When you throw a stone into a pond, the water in the pond moves up and down of water surface.  This movement is the perfect example for wave.
• Wavelength and frequency are two properties of light.

Conclusion

The light in terms of wave and properties of light was given with an example.