Energy and Frequency. Planck showed how the energy of a quantum of light is related is related to its frequency. He defined a constant, known as Planckâs constant, which, when multiplied by the frequency of a light quantum, gives its energy.
curiosity noun (INTEREST). B2 [U] an âeager âwish to âknow or âlearn about something: to âarouse/âexcite/âsatisfy someone's curiosity I'm âburning with curiosity-you must âtell me who âwon! She âdecided to âcall her ex-boyfriend out of curiosity.
Dictionary entry overview: What does skeptical mean? â¢ SKEPTICAL (adjective) The adjective SKEPTICAL has 2 senses: 1. denying or questioning the tenets of especially a religion 2. marked by or given to doubt Familiarity information: SKEPTICAL used as an adjective is rare.