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Analysis and Interpretation of Astronomical Spectra 72
of the measured total amount therefore yields with formula {15} the velocity difference
between the eastern and western limb of the planet. This velocity difference must
now be halved again to obtain the desired, rotation velocity s . This corresponds finally
to ¼ of the originally measured redshift (½ x ½=¼).
Projected rotation velocity of light reflecting objects:
s
= Velocity difference calculated with the measured shift
2. Self-Luminous Celestial Bodies
For self-luminous celestial objects, e.g. the Sun or galaxies, only a halving of the measured
velocity difference is required:
Projected rotation velocity of self-luminous objects:
s
= Velocity difference calculated with the measured shift
