Does a smaller light speed in a medium rule out the wave theory of light?

[sorin]

Does a smaller light speed in a medium rule out the wave theory of
light?

The light speed measured by Foucault in water does not fit with a
wave theory of light because the light beam is normal to the interface
and in this case the incidence angle is zero.
I have seen that abstract theoretical considerations or more
complicated experiments previously proposed give headaches to actual
theoreticians, therefore this simple cut off experiment suppose only
the modification of an angle value. The experiment is at level of
actual elementary physics or at level attaint by antique Greeks.
The link :
http://www.elkadot.com/corpuscular/light%20speed%20and%20corpusculs.htm

I advice actual theoreticians to hurry up with this experiment because
the next text will indicate the absurdity of Huygens principle when is
applied to explain light comportment.

The Sleep of Reason Produces Monsters (Goya); The Absence of Reason
Produced Modern Physics.