Examlex
Find the frequency of X-rays of wavelength 2 × 10−11 m.(c = 3 × 108 m/s)
Union War Effort
The collective measures and actions taken by the Northern states during the American Civil War, including raising armies, procuring supplies, and managing resources to defeat the Confederacy.
Civil War
In the United States, refers to the conflict between the Northern states (Union) and the Southern secessionist states (Confederacy) from 1861 to 1865, primarily over issues of slavery and states' rights.
Northern Society
A secret revolutionary organization in the early 19th century in Russia, which aimed at overthrowing the autocracy and implementing constitutional reforms.
Materialism
a philosophical position that holds physical matter as the only or fundamental reality and discounts any independent existence of mental states or consciousness.
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