12.07.2015 Views

Simple Nature - Light and Matter

Simple Nature - Light and Matter

Simple Nature - Light and Matter

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Groups 1-4 work in the sun’s frame of reference according to Galilean relativity.Group 1 finds time AC. Group 2 finds time CA. Group 3 finds time AB. Group 4 finds timeBA.Groups 5 <strong>and</strong> 6 transform the lab-frame results into the sun’s frame according to Einstein’stheory.Group 5 transforms the x <strong>and</strong> t when ray ACA gets back to A into the sun’s frame of reference,<strong>and</strong> group 6 does the same for ray ABA.Discussion:Michelson <strong>and</strong> Morley found no change in the interference of the waves between day <strong>and</strong> night.Which version of relativity is consistent with their results?What does each theory predict if v approaches c?What if the arms are not exactly equal in length?Does it matter if the “special” frame is some frame other than the sun’s?Exercises 445

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