Chapter 24 Physics A First Course Light and Optics
Chapter 24
Feb 05, 2016
Chapter 24. Physics A First Course. Light and Optics. Light and Optics The Physical Nature of Light. 24.1 The Electromagnetic Spectrum 24.2 Interference, Diffraction, and Polarization 24.3 Photons. Key Question: How is the color of light related to its wavelength?. - PowerPoint PPT Presentation
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Chapter 24Physics A First Course Light and Optics
Light and OpticsThe Physical Nature of Light
24.1 The Electromagnetic Spectrum
24.2 Interference, Diffraction, and Polarization
24.3 Photons
24A Investigation: Optics
Key Question:
How is the color of light related to its wavelength?
*Students read text section 24.1 AFTER Investigation 24A
24A Investigation Topics
Use a diffraction grating to observe the spectrum of different light sources.
Find the wavelengths of different colors of light using a spectrometer.
Explain why light is a wave.
Chapter 24.1 Objectives and Vocabulary Learn the relationship among the frequency.
Learn how the speed of light changes in different materials.
Identify the different kinds of electromagnetic waves.
electromagnetic wave electromagnetic
spectrum radio wave microwave infrared light visible light ultraviolet light X rays gamma rays
Wavelength and Frequency of Visible Light
Speed of Light
c = f
wavelength (m)
frequency (Hz)
speed of light3 x 108 m/sec
Chapter 24.2 Objectives and Vocabulary Recognize an interference
pattern and how it is created.
Understand the difference between polarized and unpolarized light.
Learn about the applications of polarization.
diffraction grating diffraction pattern polarizer
Thin slits and diffraction
24B Investigation: Waves and Photons
Key Question:
How do we know light has both wave-like and particle-like qualities?
*Students read text section 24.3
AFTER Investigation 24B
24B Investigation Topics Demonstrate the polarization of transverse
waves.
Observe the polarization of light.
Explain why sunglasses work.
Discuss the wave-like and particle-like behavior of light.
Chapter 24.3 Objectives and Vocabulary Define the term photon.
Explain how energy is related to the color of light.
Learn that one photon affects one electron at a time.
photoluminescence
Absorbing and Emitting Light White paper
absorbs and then emits photons of all colors of light.
Black ink absorbs the photons of all colors and emits none.
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