-lines of molybdenum are shown, labeled
and
, and, a short distance to the right of each, appears the displaced Compton-shifted-line marked
and
.
At the moment, then, Einstein’s hypothesis of localized light-quanta is having new and remarkable successes. Duane,[194] Epstein,[195] and Ehrenfest[196] have perhaps made some slight advances also in the direction of accounting for interference in terms of it. But the theory is as yet woefully incomplete and hazy. About all that we can say now is that we seem to be driven by newly discovered relations in the field of radiation to the hypothetical use of a fascinating conception which we cannot as yet reconcile at all with well-established wave-phenomena.