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34.8 x 38.1 cm ⏐ 13.7 x 15.0 in (300dpi)
DAVID PARKER / SCIENCE PHOTO LIBRARY DAVID PARKER / SCIENCE PHOTO LIBRARY
Beta is the second letter of the Greek alphabet. In the system of Greek numerals it has a value of 2 and is used to denote a variable in mathematics and physics, where it often has specific meanings for certain applications, such as representing beta radiation. The Greek alphabet has an important role in the nomenclature of astronomical bodies and subatomic particles.
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