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Thursday, 19 June 2014 14:02

H2-27: PHASE REVERSAL BETWEEN STEREO SPEAKERS - OSCILLATOR

H2-27: PHASE REVERSAL BETWEEN STEREO SPEAKERS - OSCILLATOR

h2-27a

Additional Info

  • ID Code: H2-27
  • Purpose: Dramatically demonstrate interference between two identical sources.
  • Description: Two loudspeakers are connected in the monaural mode to the power amplifier. A switch box in the leads of one of the speakers allows reversal of the phase of that speaker.

    A nice experiment shows the relation of phase to physical position. Set the speakers to monaural and play an 80 Hz tone into the two speakers, then reverse the phase to reduce the sound to virtually nothing. Uncoil the wire from the back of one speaker and move the speaker 12 or 15 feet across the front of the room; the loud bass tone returns! The waves from the two speakers are no longer out of phase. Can easily be combined with H2-26.
  • Availability: Available
  • References: REFERENCES: (PIRA unknown.)
  • Loc codes: FS1
  • Videos-1: Click to see the action
Read 3113 times Last modified on Tuesday, 08 September 2020 15:34
Published in H2 Wave Properties of Sound
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More in this category: « H2-26: PHASE REVERSAL BETWEEN STEREO SPEAKERS - MUSIC H2-28: FOURIER SYNTHESIZER - ADDITION OF WAVES »
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