Qhia lub zog hluav taws xob
Lub zog hluav taws xob yog hais txog qhov sib xyaw ntawm cov hluav taws xob hluav taws xob lub zog thiab kev sib nqus hluav taws xob hauv kev siv hluav taws xob, thiab tseem hu ua lub zog ntawm hluav taws xob tsis. Hnub ci hluav taws xob ntaus lub ntiaj teb ntawm qhov ceev ntawm lub teeb (c = 3 × 10 ^ 8 metres / thib ob), thiab nws muaj ob qho tib si ntawm cov yam ntxwv thiab cov nthwv dej. Hauv qhov chaw nruab ntug ntawm lub cev, kev txais tos thiab kev cia khoom ntawm lub zog radiant yog cais tsis dhau los ntawm cov yam ntxwv no. Piv txwv li, cov nroj tsuag ntsuab muaj kab loog, thiab lub zog nqus tau nqa tawm hauv daim ntawv ntawm lub teeb quanta. Vim tias qhov no quantum yam ntxwv ntawm radiant zog, qhov ntau ntawm quantum zog yog nyob ntawm yoj thiab zaus.