What is this place?
Kempner.net is the personal web site of Joshua Kempner. I used to work in astrophysics before leaving the field to joing VisEn Medical in the Boston area. VisEn was acquired by PerkinElmer in July 2010. I'm still with PerkinElmer as a Principal Imaging Scientist, and continue to work on the products developed at VisEn.