Science

Who discovered the rotating magnetic field that is the basis of Alternating Current?

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What is the perception of frequency called?
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Which scientific term is best defined as "a measure of frequency"?
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Which of these animals is a mammal?
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What satellite series was known as "fellow traveler"?
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During the seventeen hundreds, what creature was thought to excrete blood through its skin?
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What kind of electromagnetic radiation arises only from nuclear excitations?
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The definition of "process of removing salts from water using a membrane" best fits which science term?
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What are solid particles that produce color by absorbing or reflecting light called?
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