Interference of Light Waves

Hazards: 

Do not look directly into the laser light.

Chemicals and Solutions: 

Materials: 

laser

record

Procedure: 

Dim the lights in the room and shine the laser on the screen to show students the point of light.  Now shine the laser on a record such that the light bounces off the record and on to the screen.  A line of spots will be seen.

Hint: 

Discussion: 

When the light hits the grooves in the record it is scattered and interference occurs among the resulting light waves.  Both constructive and destructive interference occurs leading to a pattern of dark spaces and light spots.

To schedule a demonstration, please send an email to the demonstration lab.

 

Contact:

Eric Camp

Lecture Demonstration Technician

Bagley Hall 171

(206) 543-1606

ericcamp@uw.edu

 

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