ch24 - Chapter 24 Electromagnetic Waves 24.1 The Nature of...

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Unformatted text preview: Chapter 24 Electromagnetic Waves 24.1 The Nature of Electromagnetic Waves Two straight wires connected to the terminals of an AC generator can create an electromagnetic wave . Only the electric wave traveling to the right is shown here. 24.1 The Nature of Electromagnetic Waves The current used to generate the electric wave creates a magnetic field. 24.1 The Nature of Electromagnetic Waves This picture shows the wave of the radiation field far from the antenna. The speed of an electromagnetic wave in a vacuum is: s m 10 00 . 3 8 × = c 24.1 The Nature of Electromagnetic Waves A radio wave can be detected with a receiving antenna wire that is parallel to the electric field. 24.1 The Nature of Electromagnetic Waves With a receiving antenna in the form of a loop, the magnetic field of a radio wave can be detected. 24.2 The Electromagnetic Spectrum Like all waves, electromagnetic waves have a wavelength and frequency, related by: λ f c = 24.2 The Electromagnetic Spectrum Example 1 The Wavelength of Visible Light Find the range in wavelengths for visible light in the frequency range between 4.0x10 14 Hz and 7.9x10 14 Hz....
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This note was uploaded on 02/20/2010 for the course PHYSC 210 taught by Professor Uscinski during the Summer '09 term at American.

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ch24 - Chapter 24 Electromagnetic Waves 24.1 The Nature of...

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