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A researcher is using -rays to investigating a cubic crystal. He is looking at Bragg reflection from the planes parallel to the cube faces. He finds that when using -rays with a wavelength of , a strong first maximum occurs when the beam makes an angle of with the planes. What is the spacing of adjacent atoms in this crystal?
Taxation
The practice by which governments impose financial charges on citizens or companies to fund public spending and government functions.
American Exceptionalism
The belief that the United States is unique among nations with respect to its ideals of democracy, liberty, and a distinct cultural heritage.
Military Aid
Support or assistance, typically in the form of supplies, services, or expertise, provided by one nation's military to another nation's armed forces.
Stamp Act
A 1765 British law taxing American colonists by requiring them to pay for an official stamp on paper goods, contributing to the American Revolutionary War.
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