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.
Wiktionary(0.00 / 0 votes)Rate this definition: curious(Adjective) Fastidious, particular; demanding a high standard of excellence, difficult to satisfy. curious(Adjective) Inquisitive; tending to ask questions, investigate, or explore. Young children are naturally curious about the world and everything in it.