Diffraction at circular obstacles and circular apertures -Poisson spot

Article no. P1412201 | Type: Experiments

10 Minutes
20 Minutes
grades 10-13
heavy
Teachers/Professors
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Also part of:

DEMO advanced physics set: Diffraction and interference on tthe profile bench

Article no. 15565-88 | Type: Set

Delivery time: 4-8 weeks

Principle

If circular apertures are illuminated with coherent light, concentric bright and dark circles alternate behind them due to diffraction and interference. The intensity of the interference maxima decreases rapidly with increasing distance from the center.If the circular apertures are exchanged for circular apertures, similar interference patterns appear. Brightness is always observed at any location on the center axis of the geometric shadow area.

Benefits

  • Curriculum-relevant DEMO Experiment in optics
  • Equivalence to the corresponding student experiment
  • Stable optical bench
  • Compact, simple construction

Tasks

  • Diffraction at circular apertures and circular apertures - Poisson's spot

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p1412201d .pdf
File size 0.49 Mb
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(de) Versuchsbeschreibung
p1412201_de .pdf
File size 1.13 Mb
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(ru) Versuchsbeschreibung
p1412201_ru .pdf
File size 1.23 Mb
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