Open AccessGroup velocity and energy (or particle) flow density of waves in a periodic medium
Author(s) -
Wagner E. H.
Publication year - 1959
Publication title -
acta crystallographica
Language(s) - English
Resource type - Journals
ISSN - 0365-110X
DOI - 10.1107/s0365110x59001013
Subject(s) - group velocity , physics , mechanics , group (periodic table) , energy flow , flow (mathematics) , energy (signal processing) , classical mechanics , optics , quantum mechanics