There's Plenty of Room at the Bottom: An Invitation to Enter a New Field of Physics
This transcript of the classic talk that Richard Feynman gave on December 29, 1959, at the annual meeting of the American Physical Society at the California Institute of Technology (Caltech) was first published in the February 1960 issue (Volume XXIII, No. 5, pp. 22-36) of Caltech’s
Engineering and Science
, which owns the copyright. It has been made available on the web at http://www.zyvex.com/nanotech/ feynman.html with their kind permission.