Previously noted elsewhere, but for those who don't read APUG or
the Pure Silver list ...
There is a new application note on reciprocity and intermittency
effects in enlarging paper on the Darkroom Automation web site.
http://www.darkroomautomation.com/support/appnotereciprocityandintermittency.pdf
The short synopsis is - there aren't any.
--
Nicholas O. Lindan, Cleveland, Ohio
Darkroom Automation: F-Stop Timers, Enlarging Meters
http://www.darkroomautomation.com/index2.htm
n o lindan at ix dot netcom dot com