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Bill Nye the Science Guy teaches about sound and sound waves. Bill explains and demonstrates that ears focus sound so we can hear, how an ear works including a model of an eardrum, an oscilloscope measures sound waves, sound travels faster in solids than air and travels in waves, that pitch changes the frequency of sound waves, and illustrates resonance and vibrations at natural frequency using piano strings and a wine glass. Visits a music recording studio, and doctor's office where ultrasound is being used to see a human fetus, and a school radio station staffed by students. Closed captioned. | |