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A laser pointed at a wire will create an interference pattern. If two perpendicular polarizers are placed behind the wire, the interference pattern disappears as the photons are labeled. If a third polarizer is placed in the path of the beam and rotated, the pattern interference pattern will reappear at certain angles as the labels are erased.
* Equipment seen in the video may vary from equipment used in ND Demonstrations. See information and images below for ND equipment and setup.
Setup:
Place the optical rail on the demo table.
Mount the two optics post holders on the rail close to one end.
Mount the laser in it's holder and in the burette clamp. Place this in the first post holder.
Attach the polarizers and wire to the screen. Place the screen in the second post holder.
Align the laser so it strikes the center of the wire. This should create a fuzzy pattern.
Hold a polarizer in between the screen and the wall and rotate it to see the different patterns.
Notes:
Do not shine the laser at anyone!
Courses Used In:
PHYS 10342
Discussion and Polling Questions:
Coming Soon
Equipment Needed:
Red/Green Laser
Optics Rail
Two Optics Post Holders
Burette Clamp
Optics Screen with Hole
Two Polarizers and Wire Attachment
Laser Holder
Additional Poarizers
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