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.
Curiosity killed the cat. Satisfaction brought it back, that's why the cat has nine lives (English proverb) Unfortunates learn from their own mistakes, and the lucky ones learn from other's mistakes. (Afghanistan proverb) The one without a sword gets humiliated.. (Arabic proverb) What comes easily is lost easily..