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 time
BA.
Groups 5 and 6 transform the lab-frame results into the sun’s frame according to Einstein’s
theory.
Group 5 transforms thexandtwhen ray ACA gets back to A into the sun’s frame of reference,
and group 6 does the same for ray ABA.
Discussion:
Michelson and Morley found no change in the interference of the waves between day and night.
Which version of relativity is consistent with their results?
What does each theory predict ifvapproachesc?
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?466 Chapter 7 Relativity