Infinite photos and videos for every Wiki article · Find something interesting to watch in seconds
History
Page
Typical ten-inch (25 cm) student slide rule (Pickett N902-T simplex trig)
Typical ten-inch (25 cm) student slide rule (Pickett N902-T simplex trig)
Cursor on a slide rule
Cursor on a slide rule
This slide rule is positioned to yield several values: From C scale to D scale (multiply by 2), from D scale to C scale (divide by 2), A and B scales
This slide rule is positioned to yield several values: From C scale to D scale (multiply by 2), from D scale to C scale (divide by 2), A and B scales (multiply and divide by 4), A and D scales (squares and square roots).
A 7-foot (2.1 m) teaching slide rule compared to a normal-sized model
A 7-foot (2.1 m) teaching slide rule compared to a normal-sized model
Page
Four of Pascal's calculators and one machine built by Lépine in 1725, Musée des Arts et Métiers
Four of Pascal's calculators and one machine built by Lépine in 1725, Musée des Arts et Métiers
Replica of Schickard´s calculator
Replica of Schickard´s calculator
Detail of a replica of an 18th-century calculating machine, designed and built by German Johann-Helfrich Müller.
Detail of a replica of an 18th-century calculating machine, designed and built by German Johann-Helfrich Müller.
A mechanical calculator from Anton Braun, dated 1727
A mechanical calculator from Anton Braun, dated 1727