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A laser produces a beam of 4000-nm light. A shutter allows a pulse of light, 30 ps in duration, to pass. Which of the following is closest to the uncertainty in the energy of a photon in the pulse? ( = 1.055 × 10-34 J ∙ s = 6.59 × 10-16 eV ∙ s)
Appreciation
An increase in the value of an asset or currency over time.
Dollar
A widely used currency in international trade, often associated with the United States Dollar (USD), recognised by the symbol $.
Managed Float System
An exchange rate system in which a country's currency value is allowed to fluctuate in response to foreign exchange market mechanisms, with occasional intervention by the country's monetary authorities to stabilize the currency's value.
Exchange Rates
The value of one currency expressed in terms of another, determined by the foreign exchange market.
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