Quantum Theory is born when German theoretical physicist Max Planck shares his hypothesis that radiation energy is emitted, not continuously, but rather in discrete packets called quanta. The energy E of the quantum is related to the frequency ν by E = hν. The quantity h, now known as Planck’s constant, is a universal constant with the approximate value of 6.62607 × 10−34 joule-second. In 1905 Einstein extended Planck’s hypothesis to explain the photoelectric effect. More
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Snohomish, Skagit and Island County
