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Diffraction at a slit, at a post and at a circular iris diaphragm

Diffraction at a slit, at a post and at a circular iris diaphragm

VP5.3.1.1

$Diffraction at a slit, at a post and at a circular iris diaphragm$

$Diffraction at a slit, at a post and at a circular iris diaphragm$ Interference pattern of experiment P5.3.1.1 on the screen (P5.3.1.1)

Diffraction at a slit, at a post and at a circular iris diaphragm

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Description

The experiment P5.3.1.1 looks at the intensity minima for diffraction at a slit. Their angles ϑ_k with respect to the optical axis for a slit of the width b is given by the relationship

In accordance with Babinet’s theorem, diffraction at a post produces similar results. In the case of diffraction at a circular iris diaphragm with the radius r, concentric diffraction rings may be observed; their intensity minima can be found at the angles ϑ_k using the relationship

Components of equipment sets

1	46991 4	Diaphragm with 3 single slits
1	46996 4	Diaphragm with 3 diffraction holes
1	46997 8	Diaphragm with 3 diffraction objects
1	46022 4	Holder with spring clips
1	471832	He-Ne laser, unpolarised
1	46001 4	Lens in frame, f=5 mm
1	46002 4	Lens in frame, f=50 mm
1	46032 8	Optical bench with standardised profile, 1 m
4	460370 8	Optics rider, 60/34
1	44153 8	Screen, translucent
1	30011 4	Saddle base

Experiment Instructions

PDF (Experiment description)

P5.3.1.1 Diffraction at a slit, at a post and at a circular iris diaphragm

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Diffraction at a slit, at a post and at a circular iris diaphragm

Description

Components of equipment sets

Experiment Instructions

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