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2600 b.c
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1617 a.d
John Napier introduced a system called "Napiers Bones," made from horn, bone or ivory the device allowed the capability of multiplying by adding numbers and dividing by subtracting. -
1647 AD
Galileo's Telescope -
1801 AD
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During the Industrial Revolution of the 19th century, machines took over most of the manufacturing work from men, and factories replaced craftsmen’s workshops. The event that laid the groundwork for this monumental change was the introduction of interchangeable parts, or pre-manufactured parts that were for all practical purposes identical, into the firearms industry. Interchangeable parts, popularized in America when Eli Whitney used them to assemble muskets in the first yea -
1834 AD
Rotary machine of Botto, July 1834 (Reconstruction)
Photo courtesy of Museo Galileo, Florence
