…es the electromagnetic force. The best description I’ve found so far comes from Wikipedia: viz., photons are ‘chunked ripples in a field, or “excitations”, that “look like” particles’ (Wikipedia s.v.; emphasis added). That is, a photon can be considered as a discretely located (w…

…plementations of Scheme are listed by "scheme-faq-standards" . Community Scheme Wiki. 2009-06-25 . Retrieved 2009-10-20 . ^ Ed Martin (2009-07-20). "List of Scheme-using schools" . Schemers Inc. Archived from the original on 2009-03-30 . Retrieved 2009-10-20 . ^ "List of SICP-usi…