01 Fractal Fingers
02 Oscillating Sphere
03 Siren
04 Coloured Line
11 Drifting Speckles
Wandernder Laserfleck
01 Fractal Fingers
02 Oscillating Sphere
03 Siren
04 Coloured Line
11 Drifting Speckles
Wandernder Laserfleck
Shine a laser beam onto a dark surface. A granular pattern can be seen inside the spot. When the pattern is observed by a camera or the eye, that is moving slowly, the pattern seems to drift relative to the surface. Explain the phenomenon and investigate how the drift depends on relevant parameters.
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"Laser" by Michael Welsh is licensed under CC BY-NC 2.0
