Has Wave Function Collapse Been Verified Experimentally ?

[Point Conception]

In QM theory entangled particles or photons are in superposition for spin (spin up or spin down) or for polarization angles.
When one of the space like separated pair is measured for a spin or polarization observable,
the wave function collapses and the other particle is then in a definite spin or polarization state
in accord with conservation laws. Although Bell Inequality violations show there cannot be
pre determined values. Have experiments actually verified superposition / wave function collapse with
space like separated particles ?

 

[meBigGuy]

Are you asking for experimental verification of Bell Inequality Violation? There are many writeups available through Google.
http://en.wikipedia.org/wiki/Bell_test_experiments (up to 18Km)

If that isn't what you are asking, please try again.