George Grant’s Difference Engine Explained 

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Everything You Need To Know

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George Grant’s difference engine was a calculating machine. It was used to advance the calculating machine technology and was also purchased by Provident Mutual life Insurance Co. to calculate life insurance tables.

3 Facts about George Grant’s Difference Engine

George Grant’s difference engine was first displayed in 1876 at the Centennial Exhibition in Philadelphia.

1

This difference engine was just one of the many calculation machines by inventor George Grant.

2

George Grant also contributed to Botany, with a collection of previously undocumented plants at the Stanford University herbarium.

3

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George Barnard Grant first started working on a mechanical calculator while a student at the Lawrence Scientific School at Harvard.

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He heard of Charles Babbage and his difference engine in 1870 and started working on his own version of a mechanical calculator for engineering purposes.

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Grant continued to work on mechanical calculators after earning a bachelor’s degree in 1873. He eventually created the difference engine and prepared it for exhibition in 1876.

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George Grant’s Difference Engine: How It Worked

The difference machine of Grant was approximately 2.5 meters long and 1.5 meters high, weighing about 900 kg. It could be manually operated or connected to a power source.

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George Grant’s Difference Engine: Historical Significance

Just as Grant built upon the work of Charles Babbage and others, many more calculating machines would be created based on his invention.

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