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Corrections

APR 01, 1975
Physics Today

February, page 33: Reference in first column, next‐to‐last line should be “5,6” not “5,3.” In figure 1 add “1 MeV” midway between “1 keV” and “1 GeV.”

—page 34: The lifetime of 6.8 microsec should apply to the first excited state of Ta181, shown in color.

—page 35: In figure 3, the laser and its first mirror images should be equally spaced from the mirrors; in figure 4 the point for Ir191 should lie on the slanting red line.

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Volume 28, Number 4

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