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.
Curious, inquisitive, meddlesome, prying refer to taking an undue (and petty) interest in others' affairs. Curious implies a desire to know what is not properly one's concern: curious about a neighbor's habits. Inquisitive implies asking impertinent questions in an effort to satisfy curiosity: inquisitive about a neighbor's habits.