DOC.
42
SPECIAL AND GENERAL RELATIVITY 325
82
Relativity
this
objection
he claimed that mechanics
must
be
placed
on
a
[42]
new
basis.
It
can
only
be
got
rid
of
by
means
of
a
physics
which
is
comformable
to
the
general principle
of
relativity,
since
the
equations
of such
a
theory
hold
for
every body
of
reference,
whatever
may
be
its
state
of motion.