Original poster: dave pierson <davep-at-quik-dot-com> 
>Why? Einstein didn't build a single cyclotron to prove his theories
    Indeed.
    However there are many  ways to test his theories.
    He proposed the observations/tests.
    Others (30 years pre cyclotron) MADE the observations.
    They matched the predictions.
(and:
Einstein had MANY ideas.
    MOST have stood up remarkably well.
    SOME have not.
)
        best
           dwp