Skip Ribbon Commands
Skip to main content
SharePoint

6D20.50 - Fraunhofer Diffraction

The Web Part cannot find an InfoPath form in the specified location. Either the location does not have an InfoPath form associated with it or it is on a different site collection. Modify the Web Part Properties and select a list or library on the current site.

​6D20.50 - Fraunhofer Diffraction

Preview
SelectSelected
Title6D20.50 - Fraunhofer Diffraction
Objective

Demonstrate Fraunhofer diffraction.

StatusAvailable
Assembly Instructions

Instructions
Project the laser dot onto the wall and insert a ruling into the beam and rotate to show that the diffraction pattern rotates with the ruling. Then insert the second Ronchi ruling into the beam and align it so as to be parallel with the first ruling. Once again, a single diffraction pattern is seen. But if you now rotate one of the rulings so the angle between the rulings goes from 0-90° you get an increasingly complex pattern until you get t he Fraunhofer pattern for a square when you reach 90°. A third ruling can be added so even more complex Fraunhofer patterns can be shown. One can also show the difference between the 300 and 500 L.P.I. gratings or a combination of the two.

Setup Time12
Operation Time
Preview Time5
Operation Instructions
ExportableNo
Demo on DimeNo
PIRA 200No
Export Instructions (if different)
HazardsNone
Analysis/Information
Category6 Optics
Subcategory6D - Interference
Keywordsinterference
Construction Information
 
  
  
optical rail - with mounted 4mW green laser, swival mirror, and component platform
1
Ronchi Ruling Plates (300 LPI, 500 LPI)
4
image screen & camera (optional)
1
Export Setup - export laser holder with platform, push on/off green laser, Ronchi Ruling Plates
1