In a message dated 04/03/2000 8:08:36 AM Pacific Daylight Time,
[EMAIL PROTECTED] writes:
<< I would like to see (or do) the single crystal experiment in
order to definitively characterize the "tube tails". >>
If I were concerned and wanted to measure the tails, I would first make sure
that they are present. To image the focal line or -spot by pinhole photograph
is a sensitive test (it is an old trick to quickly find out if you are on a
point or line focus). The graph in Bergmanns web-site (which describes tube
tails) represents nothing else but such an image scanned with a detector.
Unfortunately, he does not tell us if the intensity scale is linear or
logarithmic.
L. Keller
