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The Wave Nature of Light

Explore the wavelike properties of light energy, including wavelength, frequency, and speed. Learn about visible light and various types of electromagnetic radiation. Understand the fundamental characteristics of electromagnetic waves and their relation to water waves. Dive into the vast electromagnetic spectrum and solve practice problems to enhance your understanding of light waves.

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The Wave Nature of Light

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  1. The Wave Nature of Light Section 6.1

  2. Objectives • Study light (radiant energy or electromagnetic radiation) as having wavelike properties. • Identify the characteristics of wavelength, frequency, and speed

  3. Electromagnetic radiation Wavelength Frequency Speed Key Terms

  4. Why Study Light? • Our understanding of the electronic structure of atoms came from the analysis of light either emitted or absorbed

  5. Visible Light • Light we can see with our eyes • An example of electromagnetic radiation

  6. Electromagnetic Radiation • Energy that travels through space • a.k.a radiant energy • Many types of ER • Visible light • Radio waves • X rays

  7. Radio AND X rays?? • All ER share fundamental wave characteristics • Travel through a vacuum as the speed of light: 3.00 x 108 m/s

  8. Wavelength,  • Shortest distance between equivalent points on a continuous wave • Between 2 adjacent peaks or troughs

  9. Frequency,  • Number of complete wavelengths or cycles that pass a given point per second. • Measured in Hz (Hertz)

  10. Amplitude • Wave’s height from the origin to a peak, or from the origin to a trough • Relates to the intensity of the radiation

  11. Characteristics of Waves

  12. ER versus Water Waves • ER move at the same speed • Wavelength and frequency are always related

  13. Why Your Radio Won’t Take an X ray • ER have different properties as a result of their varying wavelengths

  14. Electromagnetic Spectrum

  15. A VERY Large Spectrum • Gamma rays = • Radio waves =

  16. Don’t Forget… ROY G BIV • Order of colors (LS) on the visible spectrum

  17. Practice Problem • The yellow light given off by a sodium vapor lamp used for public lighting has a wavelength of 589 nm. What is the frequency of this radiation?

  18. Solution

  19. Assignment Wave Nature of Light Practice Problems Worksheet

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