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December 1980
ISSN 0031-9228
EISSN 1945-0699
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Articles
Neutron interferometry
Physics Today 33 (12), 24–30 (1980);
https://doi.org/10.1063/1.2913855
Coherent beams of neutrons, split and recombined by Bragg diffraction in a perfect single crystal of silicon, demonstrate effects on the phase of the wavefunction due to gravity and other phenomena.
The first fifty years of the AAPT
Physics Today 33 (12), 34–43 (1980);
https://doi.org/10.1063/1.2913856
As scientific societies proliferated in the 1920's and 1930's, physics teachers began to realize that their specific needs could best be served only by an association of their own.
Ballistic heat pulses in crystals
Physics Today 33 (12), 44–50 (1980);
https://doi.org/10.1063/1.2913857
At low temperatures heat energy can travel through single crystals ballistically, a form of heat transport that occurs at the speed of sound and which can be extremely anisotropic.
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Editorial
A health sensor powered by sweat
Alex Lopatka
Origami-inspired robot folds into more than 1000 shapes
Jennifer Sieben
Careers by the numbers
Richard J. Fitzgerald