Corrections

MAR 01, 1970

Physics Today

OCTOBER 1968, page 77—The bubble‐chamber picture shown was not made with the Nimrod accelerator, as the caption claims, but was made much earlier with the Saclay 81‐cm bubble chamber at CERN.

DECEMBER 1969, page 67—The new journal Optics Communications appears monthly rather than quarterly.

DECEMBER 1969, page 95—Kenneth Fox is an associate professor, not an assistant professor.

JANUARY 1970, page 30—$400 million, rather than $300 million, was invested in physics research and development in 1969 compared with the total of $16 000 million, rather than $27 000 million, in scientific research and development.

This Content Appeared In

Volume 23, Number 3

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