On Sat, 19 Mar 2011 18:29:43 -0700 (PDT), Jim Lux
wrote:

How did this slip from "near IR" to 32 GHz?


The example of 32 GHz is to illustrate that I am not just speculating
about the difficulties of doing it at IR. I have personal knowledge
of how hard it is at 32GHz, and I'm pretty sure it's harder at Near
IR.

Hi Jim,

The display and measure of Newton's rings is exceedingly trivial for
optical time/phase/freq/distance differences far shorter in shift (nm
to um) than what is being described here (in mm).

73's
Richard Clark, KB7QHC