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Ch 23: Holt Physical Science Chapter 23: Light and Our World

About This Chapter

The Light and Our World chapter of this Holt Physical Science Textbook Companion Course helps students learn essential physical science lessons on light. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Light and Our World textbook chapter.

How it works:

  • Identify the lessons in the Holt Physical Science Light and Our World chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the light-related topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Ray diagrams
  • Reflection and refraction of light
  • Angle of incidence and curved surfaces
  • How vision works
  • Vision problems and treatments
  • How optical instruments work
  • Types of telescopes

Holt is a registered trademark of Holt, Rinehart and Winston, which is not affiliated with Study.com.

5 Lessons in Chapter 23: Holt Physical Science Chapter 23: Light and Our World
Test your knowledge with a 30-question chapter practice test
Light Rays: Definition, Types & Sources

1. Light Rays: Definition, Types & Sources

This lesson will explain what light rays are, the main types of light rays, and how they can be simulated using lasers or beams of light. A short quiz will follow.

Reflection: Angle of Incidence and Curved Surfaces

2. Reflection: Angle of Incidence and Curved Surfaces

How do waves reflect off of surfaces? How do we account for the images that we see reflected in various objects? Discover the answers to these questions as we investigate the rays and angles defining the law of reflection.

How Does Vision Work?

3. How Does Vision Work?

How do your eyes and brain work together to turn light into images? You'll learn about the working components of the eye and take a look at two theories of color perception.

What is Optical Fiber? - Definition & Concept

4. What is Optical Fiber? - Definition & Concept

Optical fiber is a type of cabling technology that uses light to carry voice and data communications (telecommunications) over distances both great and small. This lesson will provide a definition of optical fiber, explore the different types and explain how the different types are used. We'll also look at the advantages of optical fiber over traditional copper wiring and examine the limitations.

Types of Telescopes: Radio, Reflecting & Refracting Telescopes

5. Types of Telescopes: Radio, Reflecting & Refracting Telescopes

Learn about the different types of telescopes that astronomers use: X-ray, radio, gamma ray, reflecting and refracting. Learn what the differences are between them and what different things they show us about the universe.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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