5-B - 1 Atomic Spectra Blackbody radiation is the visible...

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Unformatted text preview: 1 Atomic Spectra Blackbody radiation is the visible glow that solid objects emit when heated. Max Planck (18581947): proposed the energy is only emitted in discrete packets called quanta . The amount of energy depends on the frequency: E = h = hc h = 6.626 10- 34 J s 2 Atomic Spectra Albert Einstein (18791955): Used the idea of quanta to explain the photoelectric effect. He proposed that light behaves as a stream of particles called photons . 3 Atomic Spectra A photons energy must exceed a minimum threshold for electrons to be ejected. Energy of a photon depends only on the frequency. 4 Atomic Spectra For red light with a wavelength of about 630 nm, what is the energy of a single photon and one mole of photons? E = h = hc h = 6.626 10- 34 J s 5 WaveParticle Duality Louis de Broglie (18921987): Suggested waves can behave as particles and particles can behave as waves. This is called waveparticle duality....
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5-B - 1 Atomic Spectra Blackbody radiation is the visible...

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