Recoil‐free gamma radiation is used to study relativistic effects, lattice dynamics and hyperfine interactions in solids. Problems encountered in such work are those of low‐energy nuclear physics and the need for a precise Doppler modulator.
TODAY NEW DISCOVERIES in physics are rapidly assimilated. Although only nine years have passed since Rudolf Mössbauer submitted his first article, the Mössbauer effect is currently being used in many undergraduate physics laboratories, and four or five manufacturers are offering off‐the‐shelf Mössbauer spectrometers.
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With strong magnetic fields and intense lasers or pulsed electric currents, physicists can reconstruct the conditions inside astrophysical objects and create nuclear-fusion reactors.
A crude device for quantification shows how diverse aspects of distantly related organisms reflect the interplay of the same underlying physical factors.