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c161l18_10_17 - Chapter 7 Chapter 7 Atomic Structure The...

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Unformatted text preview: Chapter 7 Chapter 7 Atomic Structure The Microscopic World The Microscopic World W In large scale (macroscopic) phenomena, what we see makes sense W A rock is always a rock W In the microscopic world, things get weird A Brief History of Light and physics A Brief History of Light and physics W 1670s Isaac Newton studies “opticks” Light is a wave Different colors, different wavelengths (see later) W 1838 Faraday describes electricity and cathode rays W 1879-1890 Relationship between cathode rays, magentism W 1893 Thomson measures mass/charge ratio of cathode ray W 1905 Einstein explains photoelectric effect (see later) More history More history W 1909 Millikan’s oil drop experiment Charge comes in discrete units Using Thomson’s data, measures mass of electron W 1909 Rutherford’s experiment disproves the “raisin pudding” model Characteristics of light Characteristics of light W Light is a form of electromagnetic radiation W A periodically oscillating electric field which induces an oscillating magnetic field...
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c161l18_10_17 - Chapter 7 Chapter 7 Atomic Structure The...

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