Quantum superposition
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What links here
Tuning fork
Graptolite
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Celesta
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Ivan Pavlov
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Hubble sequence
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Rhodes piano
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Resonance
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Phase-locked loop
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Frequency standard
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Crystal oscillator
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Tesla coil
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Cranial nerves
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1711
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18th century
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Phonograph
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Oscillation
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Musical tuning
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Carl Sagan
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Clock
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Additive synthesis
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Acupuncture
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Alexander Graham Bell
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