Williams, Gary A. Department of Physics, University of California, Los Angeles, California.
Last reviewed:January 2020
- Low-Temperature Properties of Solid Materials
- Experimental methods
- Metals and crystals
- Amorphous materials
- Superfluid Helium
- First sound
- Second sound
- Third sound
- Fourth sound
- Fifth sound
- Superfluid 3He
- Related Primary Literature
- Additional Reading
The application of acoustics to research on the properties of condensed matter at low temperatures. Acoustic techniques are readily adaptable to the cryogenic environment and make possible many measurements of the structural and thermodynamic properties of materials at temperatures approaching absolute zero (0 K, which is −460°F or −273°C). The study of sound propagation has also yielded major insights into the low-temperature phenomena of superconductivity in metals and superfluidity in liquid helium.
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