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When it comes near a heavy nucleus,a gamma ray,which is a high energy photon,can "disappear," and in its place there will be produced an electron and a positron,which both have mass.According to special relativity,this pair production is an example of __________.
Urban Proletarian
A member of the working class who lives in an urban area, often associated with the industrial labor sector.
Agrarian
Relating to the cultivation of land or the agricultural sector of the economy.
Nationalistic Differences
Highlight the distinguishing beliefs, values, and practices that stem from strong identification with one's nation, leading to variations among countries.
Post-Marxian Theory
Intellectual frameworks and critiques that evolve from or react to Marxist theory, while diverging in methods or goals.
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