🚀 go-pugleaf

In article <1OCT199211415927@csa3.lbl.gov> sichase@csa3.lbl.gov (SCOTT I CHASE) writes:
)
)Why would you say that?  Neutron interferometry experiments have been done 
)which in fact show that gravity does affect interference of a split neutron
)beam which is recombined after the beams travel through a gravitational
)potential difference.

Interesting.  My impression of the original post was that the concern was
with interaction with gravity constituted a 'measurement' which would destroy
the interference fringes.  Since I was fairly sure that actual interference
experiments with particles have been done, and I was pretty sure they were
not done in zero G, I concluded the mere presence of a gravity field was not
enough to disturb the measurement sufficiently to prevent fringes from
forming.

It's logical that changing the momentum of the neutron would affect it's
wave function and hence the measured interference fringes, and interesting
that the energies were low enough to observe the effect experimentally.
(I suppose that's logical too - you want to make the wavelength as long
as possible and that implies low momentum, I believe).