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7 Cards in this Set

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Pythagoras
*Observed Relationship between pitch and frequency
*Invented the sonometer
Boethius
*First to compare sound waves to waves produced from pebble dropped in calm water
Leonardo da Vinci
*Thought to have originated the idea that sound travels in waves.
*Discovered that Angle of Reflection = Angle of Incidence
Lazzaro Spallanzani
*Bat Experiment (bats could function when blinded but not when deafened)
Augustin Fresnel
*Theory of Wave diffraction
Christian Johann Doppler
*Doppler Effect (source of wave motion results in frequency changes)
Jacques and Pierre Curie
*Piezoelectric effect (certain chemicals would expand and contract when placed in alternating electrical field)
*Led to development of the modern ultrasound transducer.