; this follows from the first of equations (29) and expresses the Lorentz contraction. A clock at rest at the origin
of
, whose beats are characterized by
, will, when observed from
', have beats characterized by
; this follows from the first of equations (29) and expresses the Lorentz contraction. A clock at rest at the origin
of
, whose beats are characterized by
, will, when observed from
', have beats characterized by