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6C- Chapter 24

# 6C- Chapter 24 - -Doppler effect for light or...

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Chapter 24 - Electromagnetic waves- can propagate through a vacuum 24.2 Maxwell’s Eq. - Eq. 24.4 is Gauss’s law- the total electrivc flux through any closed surface equals the net charge inside that surface divided by ε. - Gauss’s law for magnetism says that the net magnetic flux through a closed surface is zero. (Eq 24.5) - Eq 24.6 is Faraday’s law of induction descirbes how a changing magnetic field creates an electric field. Line integral of the electric field around any closed path equals to the rate of change of magnetic flux through any surface bounded by that path. - -Eq. 24.7 describes the line integral of the magnetic field around any closed path is determined by the net current the rate of change of electric flux through any surface bounded by that path. 24.3 Electromagnetic Waves - Electric field wave equations and Magnetic field wave equations are the same. 24.16 and 24.15 - ratio of electric field to the magnetic field equals to the speed of light - superposition principle obeyed by electromagnetic waves.
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Unformatted text preview: -Doppler effect for light or electromagnetic waves (Eq. 24.22) o positive means moving towards the direction of wave. 24.4 Hertz Discovery- In a simple LC circuit energy transfer between inductor and capacitor occurs, resulting in oscillation of charges.-square of angular frequency for inductors same as linear wave.-Nodes and antinodes 24.5 Energy carried by Electromagnetic Waves- intensity of the electromagnetic wave equals the average energy density multiplied by the speed of light. 24.6 Momentum and Radiation Pressure- Electromagnetic waves transport linear momentum as well as energy 24.8 Polarization- Electric and magnetic vectors associated with electromagnetic waves are perpendicular to each other.-Malus’s law applies to any two polarizing materials whose transmission axes are perpendicular to each other 24.9 Laser Light- Laser light requires that a stimulate emission to achieve laser action....
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