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.
SYNONYMS curious, inquisitive, snoopy, nosy. These adjectives apply to persons who show a marked desire for information or knowledge. Curious most often implies an avid desire to know or learn, though it can suggest prying: A curious child is a teacher's delight. A curious neighbor can be a nuisance. Inquisitive frequently suggests excessive curiosity and the asking of many questions: âRemember, no revolvers.