Abstract: In
this work, we argue that adding the displacement current in
Ampere's law by Maxwell was equivalent to considering the
field as an elastic continuum. To corroborate this point, we
prove that, when linearized, the governing equations of an
incompressible elastic continuum yield Maxwell's equations
as corollaries. The divergence of the deviator stress tensor
is analogous to the electric field, while the vorticity (the
\emph{curl} of velocity field) is interpreted as the
magnetic field. The nonlinearity of the material time
derivative (the advective part of acceleration) is
interpreted as the Lorentz force. Thus we have established
that the electrodynamics can be fully explained if one
assumes that it is the manifestation of the internal forces
of an underlying elastic material which we term the \emph{metacontinuum}.

The possible detection of the absolute continuum is also
discussed. First, a new interferometry experiment is
proposed in which the first-order Doppler effect can be
measured and thus the presence of a medium at rest can be
unequivocally established. Second, the famous experiment of
Ives and Stilwell is reexamined with a modified Bohr-Rydberg
formula for the emitted frequencies from a moving atom, and
it is shown that the results of Ives and Stilwell are fully
compatible with the presence of an absolute medium.