SWEEPNIK

SWEEPNIK was a device designed by Otto Frisch that used a sweeping laser to follow bubble chamber tracks. It was later used to follow roads as an aid to the digitisation of maps.{{Cite web |publisher=Cambridge Physics, part of the Cavendish Laboratory Educational Outreach website for schools and the public |title=Cambridge Physics - Sweepnik |url=http://www-outreach.phy.cam.ac.uk/camphy/sweepnik/sweepnik_index.htm |archive-url=https://web.archive.org/web/20060620192304/http://www-outreach.phy.cam.ac.uk/camphy/sweepnik/sweepnik_index.htm |archive-date=20 June 2006 |access-date=16 December 2008}}{{Cite journal |last1=Davies |first1=D. J. M. |last2=Frisch |first2=O. R. |last3=Street |first3=G. S. B. |date=1970-05-30 |title=Sweepnik: A fast semi-automatic track-measuring machine |url=https://dx.doi.org/10.1016/0029-554X%2870%2990325-3 |journal=Nuclear Instruments and Methods |volume=82 |pages=54–60 |doi=10.1016/0029-554X(70)90325-3 |bibcode=1970NucIM..82...54D |issn=0029-554X}}{{Cite web |title=Cavendish Laboratory : The Sweepnik plate analyser for high energy particle tracks in about 1970 |url=https://cudl.lib.cam.ac.uk/view/PH-CAVENDISH-P-01916 |access-date=2024-08-14 |publisher=Cambridge Digital Library}}{{Cite book |last1=Davies |first1=D J M |last2=Street |first2=G S B |last3=Frisch |first3=O R |chapter=SWEEPNIK II, an improved track measuring machine |date=1970 |chapter-url=https://cds.cern.ch/record/862549/files/285.pdf?version=1 |title=International Conference on Data-Handling Systems in High-Energy Physics |language=en |doi=10.5170/CERN-1970-021-V-1.285|page=285-292}}