Crossword Clue:

a quantum of vibrational energy

AnswerCrossword Clue
PHONONQuantum of energy
PHOTONQuantum of light energy.
PHOTONQuantum of radiant energy.
ROTONEnergy quantum
OLGAKURYLENKOUkrainian-born actress who was a Bond girl in "Quantum of Solace"
MAXPLANCKApple computer's board in conversation with a quantum theory proponent (3,6)