About This 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
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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.
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.
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.
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.
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.
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Other chapters within the Holt Physical Science: Online Textbook Help course
- Holt Physical Science Chapter 1: The World of Physical Science
- Holt Physical Science Chapter 2: The Properties of Matter
- Holt Physical Science Chapter 3: States of Matter
- Holt Physical Science Chapter 4: Elements, Compounds, and Mixtures
- Holt Physical Science Chapter 5: Matter in Motion
- Holt Physical Science Chapter 6: Forces and Motion
- Holt Physical Science Chapter 7: Forces in Fluids
- Holt Physical Science Chapter 8: Work and Machines
- Holt Physical Science Chapter 9: Energy and Energy Resources
- Holt Physical Science Chapter 10: Heat and Heat Technology
- Holt Physical Science Chapter 11: Introduction to Atoms
- Holt Physical Science Chapter 12: The Periodic Table
- Holt Physical Science Chapter 13: Chemical Bonding
- Holt Physical Science Chapter 14: Chemical Reactions
- Holt Physical Science Chapter 15: Chemical Compounds
- Holt Physical Science Chapter 16: Atomic Energy
- Holt Physical Science Chapter 17: Introduction to Electricity
- Holt Physical Science Chapter 18: Electromagnetism
- Holt Physical Science Chapter 19: Electronic Technology
- Holt Physical Science Chapter 20: The Energy of Waves
- Holt Physical Science Chapter 21: The Nature of Sound
- Holt Physical Science Chapter 22: The Nature of Light