----- Original Message ----
> From: Stephen A. Lawrence <[email protected]>
> To: [email protected]
> Sent: Mon, April 19, 2010 5:03:42 PM
> Subject: Re: [Vo]:Revisiting the MM experiment
>
>
On 04/19/2010 03:52 PM, Harry Veeder wrote:
> In case anyone is
> interested, the guy with the vertical
> interferometer has repeated his
> experiment with a more rigid
> apparatus:
>
>
> href="http://worldnpa.ning.com/profiles/blogs/grusenick-repetition-of";
> target=_blank
> >http://worldnpa.ning.com/profiles/blogs/grusenick-repetition-of
Quote:
>
> During a 180° rotation with the new Interferometer, I can see on average
>
> 1.5 interference fringe shifts during the night and 2.0 during daytime.
>
> With the older one, which you can see in the YouTube movie, there are
>
> 11.0 shifts at night and 11.5 if the experiment is performed during
> daytime.
So, paraphrasing and summarizing, he stiffened the
> apparatus
substantially, and 90% of the observed fringe shift
> vanished.
Obvious conclusion: The critics who said the "signal"
> observed with the
first apparatus was really just "noise" due to flexing of
> the apparatus
were clearly correct.
It seems like a good guess that
> stiffening it still further would reduce
the observed shift stiff
> further.
His interest is now in the movement of the fringes rather than in the number of
fringes:
"The zero point, where a standstill of the pattern movement happens, is for
both interferometers at the same position. There are two zero
points in a 360° rotation of both interferometers when the beam splitter is
positioned horizontally to the earth's surface.
To all people who say that the only influence on the interferometer is
gravity, I have a simple question. Why is there no zero point or stop of the
fringe pattern movement when the beam splitter is in the vertical
position? In the beam splitter's vertical position, the mirrors and the
mirror holders are symmetrically pushed by gravity. But there is no zero point."
Harry
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