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00:10:00
What is sound? How high a pitch can you hear? Can two sounds add up to no sound? Explore these questions and more in this resonant presentation.

00:06:10
Get to know the grandfather of all instruments, the Pipe Organ. We talked with Schoenstein & Company Organ Builders about the process of designing, constructing, and fine-tuning their instruments.

00:24:00
Cheryl E. Leonard is a composer, performer, and instrument builder who creates instruments from unusual raw materials���everything from glass shards and pinecones to glaciers and box springs. This interview took place at the Exploratorium on October 10, 2013, just prior to her performance of Selections from Antarctica: Music from the Ice with Phillip Greelief.

00:50:00
Cheryl E. Leonard is a composer, performer, and instrument builder who creates instruments from unusual raw materials���everything from glass shards and pinecones to glaciers and box springs. Here she performs Selections from Antarctica: Music from the Ice with Phillip Greelief, as part of the Exploratorium���s Resonance series.

00:12:21
Musician and comedian Reggie Watts improvises in the Sound Column at the Exploratorium's former home using only his voice and a looping machine.

00:03:53
Join Exploratorium educator Ken Finn as he unlocks the mystery behind the black sand (a.k.a. magnetite) at Ocean Beach. This piece explores the origin of magnetite in the Sierra Nevada mountains, its journey down the Sacramento and San Joaquin rivers to the Bay, and the interesting physical properties of this mineral, plus some fun things you can do with it.

00:00:39
An introduction to the cuica (pronounced KWEE-kah), a small friction drum used in Brazil's Carnival parade.

00:06:39
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.

00:01:30
The science behind this musical instrument, including the concepts of sound, vibration, resonance, and amplification.

1:17:34
How do opera singers sing loud enough to be heard over an orchestra? Can an opera singer's voice really break a wine glass? What's the difference between a baritone and a soprano? Discover the answers to these questions—and more!—in this presentation for families. Join physicist and composer Dr. Brian Holmes and San Francisco Opera Center Director Sheri Greenawald to explore how the art and science of singing combine in opera.