A short description of the Physics Computer Development Project at the University of California, Irvine, concerned with effective ways of using computers in the teaching environment. (Author)

This article describes how to construct a laser level. This laser level can be made using a typical 4' (or shorter) bubble level and a small laser point. The laser unit is detachable, so the bubble level can also be used in the conventional way. However, the laser level works better than a simple bubble level. Making this inexpensive device is an…