Smallest Ruler In 1994 a ruler used for measuring lengths in an electron microscope was developed by John McCaffrey and Jean-Marc Baribeau, two Canadian physicists. The ruler's smallest division is 18 atoms thick and five of the rulers stacked end to end would equal the diameter of a human hair. |
The prestigious journal Science also carried news of the recognition of the MAG*I*CAL's recognition as the World's smallest Ruler. On February 7, 1997, the following note was published:
Science Vol. 275, Number 5301, February 07, 1997, pp. 761-0.
John McCaffrey (L) and Jean-Marc Baribeau (R) contemplate the grave responsibility which comes with an entry in the Guinness Book of Records.
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