Tuesday, 17 June 2014 11:23
M2-04: LASER DIFFRACTION - HALO
Additional Info
- ID Code: M2-04
- Purpose: Demonstrate diffraction of laser light around small spheres.
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Description:
Breathe on a glass plate and sprinkle the plate lightly with lycopodium powder to create diffraction sources for the laser light. Laser light shining around the tiny spheres of lycopodium powder is diffracted, creating a series of rings around the main spot on a distant screen. The average diameter of lycopodium powder spheres is about 25-40 microns.
Actually, this is a GLORY, not a HALO; a halo is a refraction/dispersion phenomenon while a glory is a diffraction phenomenon.
- Availability: Available
- References: REFERENCES: (PIRA unknown.)
Published in
M2 Diffraction - Circular
Tagged under
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M2-01 LASER DIFFRACTION - PINHOLES
Demonstrates laser diffraction by pinholes
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M2-02: LASER DIFFRACTION - OPAQUE DISCS
Demonstrate laser diffraction by opaque discs. Read More
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M2-03: LASER DIFFRACTION - POISSON'S BRIGHT SPOT
Demonstrate the Poisson (or Arago) bright spot. Read More
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M2-04: LASER DIFFRACTION - HALO
Demonstrate diffraction of laser light around small spheres. Read More
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M2-05: PINHOLE AND OPAQUE DISC - FRESN AND FRAUN DIFFRAC
Show Fresnel and Fraunhofer diffraction from pinholes and opaque discs. Read More
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M2-11: LASER DIFFRACTION - FRESNEL ZONE PLATES
Demonstrate focusing by a Fresnel zone plate. Read More
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M2-12: LASER DIFFRACTION - FRESNEL ZONE PLATE - FOCAL LENGTH
Exhibit the foci of the Fresnel zone plate corresponding to its focal lengths. Read More
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M2-21: MICROWAVES - DIFFRACTION BY CIRCULAR APERTURE
Demonstrate diffraction of microwaves from a circular aperture. Read More
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M2-22: MICROWAVES - DIFFRACTION BY A SPHERE
Demonstrate microwave diffraction be a conducting sphere. Read More
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M2-23: MICROWAVES - FRESNEL ZONES
Demonstrate a zone plate using microwaves. Read More
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M2-31: HALO BY DIFFRACTION FROM SMALL PARTICLES
Demonstrate a halo by diffraction of light by small particles. Read More
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