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Issues
October 1974
ISSN 0031-9228
EISSN 1945-0699
Letters
Search and Discovery
Articles
Cosmic rays—astronomy with energetic particles
Physics Today 27 (10), 23–32 (1974);
https://doi.org/10.1063/1.3128914
What objects inside or outside our galaxy produce these extremely high‐energy electrons and nuclei of the entire periodic table?
Quantum chemistry and catalysis
Physics Today 27 (10), 34–41 (1974);
https://doi.org/10.1063/1.3128915
Powerful theoretical techniques are revealing similarities—particularly the role of the d‐electrons—in the electronic structure of molecules, complexes and clusters important in many diverse catalytic processes.
Acoustical holography
Physics Today 27 (10), 42–49 (1974);
https://doi.org/10.1063/1.3128916
Some things—brain tumors, faulty welds—are better “seen” by sound than by light, but there are complications that holographic techniques may be able to resolve.
Books
Elements of Group Theory for Physicists and Classical Groups for Physicists
Physics Today 27 (10), 55–57 (1974);
https://doi.org/10.1063/1.3128920
Resonances
Resonances
Physics Today 27 (10), 73 (1974);
https://doi.org/10.1063/1.3128929
Flectotachometry, it appears, is here to stay. A few months ago, to help launch “Information Exchange” (PHYSICS TODAY's expanded classified‐advertising department), we prepared a few ads such as the following:
