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Chapter 22: Problem 6

How does polarized light differ from unpolarized light? __________

Short Answer

Expert verified
Unpolarized light vibrates in multiple planes, whereas polarized light vibrates in one plane only.

Step by step solution

01

- Understand Unpolarized Light

Unpolarized light consists of waves vibrating in multiple planes. Common sources of unpolarized light include sunlight and most artificial lights.
02

- Understand Polarized Light

Polarized light consists of waves that vibrate in a single plane. This occurs when light passes through a polarizing filter or reflects off a surface at a specific angle.
03

- Identify the Key Differences

The key difference is that unpolarized light has vibrations in multiple planes, whereas polarized light has vibrations in only one plane.
04

- Examples of Polarization

Examples of methods to create polarized light include passing unpolarized light through a polarizing filter or reflecting it off surfaces like water or glass.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Unpolarized Light
Unpolarized light is light that vibrates in multiple directions or planes. Think about it like a busy highway where every car (or light wave) is moving in a different direction. Everyday sources of unpolarized light include the sun, lamps, and most artificial light sources.
When you turn on a light bulb, for instance, the light emitted consists of waves shaking in many different directions. This jumbled or diverse direction of waves makes the light unpolarized.
Polarizing Filter
A polarizing filter is like a special gate that only allows light vibrating in a particular direction to pass through.
When unpolarized light passes through a polarizing filter, the filter blocks waves oscillating in certain directions and only lets through the waves vibrating in the chosen direction.
  • For example, imagine a fence that only allows cars driving north to pass through it. All the cars driving east, west, or south are stopped.
  • Similarly, a polarizing filter blocks all other directions except one, resulting in polarized light.

Polarizing filters are often used in sunglasses to reduce glare. By filtering out light reflecting off surfaces like water or roads, they make it easier to see by preventing the confusing multiple directions of light from entering your eyes.
Light Waves
Light waves are oscillations of electric and magnetic fields that travel through space. These waves can vibrate in different directions.
Here are a few key points:
  • Light waves can be unpolarized, meaning they vibrate in many directions, or polarized, meaning they vibrate in only one direction.
  • Unpolarized light typically comes from natural sources, while polarized light often results from reflections or passing through filters.

The behavior of light waves and their polarization is crucial in many technologies, from photography to 3D glasses. By understanding how light waves work, we can control and utilize light much more effectively in various applications.

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Most popular questions from this chapter

Optional. Suppose double slits are spaced 1.33脳10?4 m apart and light of 500nm wavelength shines through them. What distance from the center spot will the second bright spot appear on a screen 4m away? __________

Optional. What effect on the double slit pattern will result from an increase in the wavelength of light? ____________________

Why is light canceled at the dark spots in double slit interference? __________

Optional. A grating with 12,000 lines per centimeter is used with light of wavelength 650nm. What is the angle of the first bright spot? __________
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