Multiple choice

Directions: Find out from the following the scientist behind the undergiven invention.

Side rule

  1. Richard James

  2. J. C. Perier

  3. William Oughtred

  4. Karl Elsener
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

William Oughtred, an English mathematician, invented the slide rule in the 1620s based on logarithms developed by John Napier. Richard James invented the Slinky, JC Perrier was a French engineer, and Karl Elsener founded Victorinox (Swiss Army knives).

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