Amplifier, speaker, microwave transmitter and detector, mirror plate

 

Code Number: 6D40.22

Demo Title: Lloyd's Mirror - Microwave Version

Condition: Excellent

Principle: Interference

Area of Study: Optics

Equipment: 

Amplifier, speaker, microwave transmitter and detector, mirror plate.

Procedure:

Place the mirror so that it is almost inline with the transmitting antenna.  An interference pattern will be set up outward from the mirror.  Note in particular that a minimum is detected close to the mirror.

References:

  • G.R. Davies,  "Interference and Diffraction Corridor Demonstrations",  TPT, Vol. 33, # 4, p. 244, April 1995.
  • Thomas B. Greenslade Jr., "Experiments with Ultrasonic Transducers", TPT, Vol. 32, #7, Oct. 1994, p. 392.
  • O- 030:  "Microwaves", DICK and RAE Physics Demo Notebook.
  • O- 430:  "Microwaves - Lloyd's Mirror",  DICK and RAE Physics Demo Notebook.
  • C. L. Andrews, "Demonstration Microwave Interferometers", AJP, 33, # 11, Nov. 1965, p. 924.
6D40.22 - Lloyd's Mirror - Microwave