Found 30 - 40 results of 50 programs matching keyword "digital sound"
The science behind this simple musical instrument, including the concepts of sound, vibration, and amplification. An introduction to the cuica (pronounced KWEE-kah), a small friction drum used in Brazil's Carnival parade. A detailed demonstration of how to make this small friction drum, including a discussion of materials needed and how different kinds of materials make for cuicas that produce different sounds. The science behind this musical instrument, including the concepts of sound, vibration, resonance, and amplification. An introduction to a crowd-pleasing noisemaker called a sound sandwich, which you can adjust to raise or lower its pitch. A detailed demonstration of how to make this primitive wind instrument using little more than a straw, two craft sticks, and some rubber bands. The science behind this instrument, including a discussion of how vibration produces sound, and how long, massive objects vibrate slowly and produce a low-pitched sound, while shorter, less massive objects vibrate quickly and produce a high-pitched sound. On the occasion of Hubble's 15th birthday we unveil two spectacular mosaic images from the telescope, discuss the amazing accomplishments of Hubble during the past 15 years, and look at some of the images from space. Paul Doherty and Eric Wegryn explore the latest photos of Titan, Saturn’s largest moon, taken from only 750 miles away by the Huygens probe. Watch as Exploratorium staff and local teachers compete for the title of Iron Science Teacher. Each contestant has 10 minutes to make a science lesson out of a secret ingredient. In this special Halloween edition, today's secret ingredient is: Plastic Bags!