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Marbles made from impact glass (glass created when a meteorite strikes the Earth and melts the surrounding sand); hand-ground dinosaur dust from femur bones.
Earliest waveform recordings of blood flowing from the heart and in the brain during sleep, dreaming, and various emotional states (1874-96).3-D printed in brass-plated stainless steel; lacquered maple, 22k gold leaf; video, waveform audio processing by Patrick Feaster