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 ...

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 ...

Later, in junior high school at Mount Greylock, I learned from a classmate (who went on to become a high school math teacher) how to use the slide rule to multiply. I never mastered division, with or ...

Most people have heard of or seen slide rules, with older generations likely having used these devices in school and at their jobs. As purely analog computers these ingenious devices use ...

Shortly after this, a simple and elegant calculating device was invented that remained in use until the 1970s and was responsible for a large portion of the scientific effort through the Apollo ...

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.