Ace Hoffman

The slide rule was used for over 400 years as a calculating/estimation tool. Abandoned with the adve

These delightful animations will keep you distracted for hours! They never wear out, they never brea

A guide to the use of the RevitaVet infrared therapy device for horses. This guide gives the protoco

This program can be used to train behavioral scientists in basic research methods and analysis of da

The Kaufmann Posographe is a fascinating mechanical contraption which was used by photographers in t