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.
eager to learn or know; inquisitive. 2. prying; meddlesome. 3. arousing or exciting speculation, interest, or attention through being inexplicable or highly unusual; odd; strange: a curious sort of person; a curious scene. 4. Archaic. made or prepared skillfully. done with painstaking accuracy or attention to detail: a curious inquiry.