Chapter 32 Maxwells Equations Electromagnetic Waves Maxwells Equations
- Slides: 30
Chapter 32 Maxwell’s Equations Electromagnetic Waves
Maxwell’s Equations Describe EVERYTHING in Electromagnetism
Gauss’ Law (Electric)
Gauss’ Law (Magnetic) No magnetic monopole exists
Faraday’s Law
Ampere-Maxwell law
Rewriting the EQN
Another equation
Maxwell’s equations (second version)
Maxwell’s Equation (Two Versions)
Electromagnetic Wave Light is represented by fluctuations in the magnetic and electric field called electromagnetic waves. EM wave is a consequence of the Maxwell’s Equation. B E
Basic Facts about EM waves in vacuum • Always travels at exactly the speed of light c. • E and B are always perpendicular. • E×B gives the direction of the wave. • |E|=|c. B| • Two independent direction of polarization (later)
Polarization (no need to memorize)
Circular Polarization (Skip) Combination of vertical and horizontal polarization
The electromagnetic spectrum
Why do we see colors?
Deriving EM waves in vacuum
Question This is precisely the speed of light! Conclusive proof that light is a kind of EM wave.
Bible? And God said, Let there be light, and there was light. - Genesis 1: 3
The Dual Nature of Light (Quantum Mechanics) Sometimes waves Sometimes particles (photons)
How to produce EM waves • Acceleration of charges • Electrons jumping in energy levels in atoms • Changing energy levels in molecules
Plane EM Waves (re-derived)
Plane EM Waves (Cont. )
Plane EM Waves (Cont. )
Plane EM Waves (Cont. )
Sinusoidal Solution
Poynting Vector
Intensity
MOMENTUM OF EM WAVES
Radiation Pressure
- Parts of a longitudinal wave
- Sound waves are mechanical waves true or false
- Example mechanical waves
- Difference between electromagnetic and mechanical waves
- Mechanical waves and electromagnetic waves similarities
- Mechanical waves vs electromagnetic waves
- Similarities of mechanical and electromagnetic waves
- Mechanical and electromagnetic waves venn diagram
- Moeoe
- Maxwell.equations
- Maxwells equations
- A health inspector is measuring the intensity of a sound
- Energy of an electromagnetic wave
- Electromagnetic waves characteristics
- Electromagnetic waves frequency
- Electromagnetic waves seeing objects and color
- Electro magnetic chart
- Electromagnetic waves ppt template
- Maxwell theory of electromagnetic waves
- Electromagnetic waves formula
- Electromagnetic energy def
- Em waves song lyrics
- Section 1 what are electromagnetic waves
- Alternating current circuits and electromagnetic waves
- Power of electromagnetic waves
- Conclusion of electromagnetic spectrum
- Electron spectrum
- The phenomenon of diffraction can be understood using *
- Electromagnetic
- Direction of electromagnetic waves
- Concept of electromagnetic waves