From: Peter Riedt on
Riedt’s 3 Mirror Interferometer Experiment – R3MIX

N>N' not to scale
| /\
| / \
| / \
| / \
|/ \
L>>>>L'====================B====B'===============R>>>>R'
^ direction of motion >
^
^
SOURCE

Mirrors at L, N and R, beam splitter at B. Light from the source is
split at B and travels left to mirror L', north to mirror N' and right
to mirror R'. The three beams are returned by the respective mirrors
to merge at B'.

Prediction: The speed of light is c (north and back), c’ (right and
back) and c'' (left and back), producing a null result (no fringe
shift at B').

Glossary:
c=299792458m/sec
c' = c*1/sqrt(1-vv/cc)
c'' = c*1/sqrt(1+vv/cc)
v = 29805m/sec
D = 11m
Time tn = BN'B' = 2D(1+vv/2cc)/c
Time tr = BR'B' = 2D(1+vv/cc)/c'
Time tl = BL'B' = 2D(1-vv/cc)/c''
tn = tr = tl

The formulas 2D(1+vv/2cc) and 2D(1+vv/cc) are given by Michelson and
Morley in the American Journal of Science 203/1887.

Peter Riedt