Ether-drift experiments using opposed masers are examined from the point of view that, if molecules contain indigenous radiation, a maser beam might be idealized as a stream of light clocks. According to a recently developed theory of the light clock, in which relativistic Doppler frequencies are developed from a classical ether model augmented by the Fitzgerald contraction, no effect from ether drift is expected, so that the null result of the experiments is in accord with this version of the ether (...) theory. (shrink)

During a transverse acceleration of a light clock from rest, the mirrors must be tilted so as to retain the light pulse. The mirrors therefore have a normal velocity which increases the frequency of the pulse at each reflection. If a mirror is annihilated, the frequency of the escaping pulse, as a result of many reflections, is that of the relativistic Doppler effect. This holds for any acceleration, if the Fitzgerald contraction is assumed, thereby furnishing a new mechanism for such (...) frequencies. The traditional mechanism, in which the source (subject to the time dilation) generates a pulse modulated by the source motion, is therefore not a unique explanation of the Doppler effect. The new mechanism permits the speculation that radiation preexists in atomic sources, rather than being generated at the instant of release. (shrink)