Welcome back DrBob! I haven't seen you in Recent Changes for a while (although you may just be contributing at times I don't). --mav
Welcome to Wikipedia, Dr.Bob!
I see that you are making interesting additions, specially in electronics and optics related articles. -- AstroNomer---- Yes, welcome, Dr. Bob! Thanks for your good work here. --User:Larry Sanger
Thank you for the warm welcome, guys. -- DrBob