Welcome back to 8.033! - MIT OpenCourseWare...TODAY’S TOPIC: SYMMETRY IN PHYSICS, II • Symmetry...
Transcript of Welcome back to 8.033! - MIT OpenCourseWare...TODAY’S TOPIC: SYMMETRY IN PHYSICS, II • Symmetry...
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Welcome back
to 8.033!
Albert A. Michelson, 1852-1931
1st American to win Nobel Prize (1907)
Image courtesy of Wikipedia.
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SUMMARY OF LAST LECTURE: SYMMETRY IN PHYSICS, I:• Key concepts: frame, inertial frame, transformation, invariant, invariance, symmetry, relativity
• Symmetry examples: translation, rotation, parity, boost
• Million Dollar question: what are the symmetries of physics?
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TODAY’S TOPIC: SYMMETRY IN PHYSICS, II• Symmetry of electromagnetism (wave equation, light propagation)
• Does speed of light depend on wavelength, motion of source or motion of observer?
• How reconcile 8.01 with 8.02?
• How transform between inertial frames?
• Key people: Michaelson & Morley
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WHAT’S THE SYMMETRY
OF CLASSICAL
MECHANICS?
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ANSWER:Figures by MIT OCW.
?Figure by MIT OCW.
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WHAT’S THE SYMMETRY
OF ELECTRO-MAGNETISM?
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SO WHICH DO YOU TRUST MORE:
Classical mechanics, or E&M?
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Albert A. Michelson, 1852-1931
Edward Williams Morley, 1838-1923
1st American to win Nobel Prize (1907)
Does c depend on observer motion (frame)?
Figures by MIT OCW.
?Figure by MIT OCW.
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No, no and no!
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Aether rescue attempts (see Resnick Table 1-2)
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