Previous lecture: Summary

1
Previous lecture Summary

• Different types of waves
• Water surface
• String/rope
• Electromagnetic waves
• Matter waves
• Intro to Fourier (examples will be added now)
• Travelling wave (1D)
• Standing wave (1D)
• Waves in 3D
• Travelling (plane) wave
• Spherical wave

2
Example
What is the period of this function?
3
Example 2 (exercise I.2)
What is the period of this function?
4
Waves in 1D 3D
5
Exercise I.6
6
Example Beatings
Velocity?
7
Example interference of plane waves
8
spherical wave emitted by a dipole
9
(Home) werkcollegeExercises II.1 II.3(at the
end of the lecture notes)