IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Maurice Hartung of the University of ...

Object Details maker Hartung, Maurice L. Description Maurice Hartung of the University of Chicago wrote this sixteen-page booklet to explain the use of natural log and logarithmic scales placed on ...

Slide rules work using the idea that adding up logarithms is the same as multiplying. For example, for a base 10 logarithm, log (10)=1, log (100)=2, and log (1000)=3.