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Second sound

In condensed matter physics, second sound is a quantum mechanical phenomenon in which heat transfer occurs by wave-like motion, rather than by the more usual mechanism of diffusion. Its presence leads to a very high thermal conductivity. It is known as "second sound" because the wave motion of entropy and temperature is similar to the propagation of…

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Overview

Description

In helium II

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Applications

Experimental observations

Bibliography

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Map overview Semantic statistics

Second sound

Nodes45
Edges44
Triples58
Avg. degree1.96
Density0.044444
Components1

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Second sound

Top relations

related to Bibliography · 15
Second sound → April, Dipl, Dissertation, Helium II, Ing, Moscow, Numerical, Peshkov, PhD Dissertation, Phys, Piram, Retrieved, Sinyan Shen, Superfluid Helium, Surface Second Sound
related to In carbon thermal conductors and beyond · 9
Second sound → For, Fourier, However, In, March, Second, The, Therefore, This
related to Experimental observations · 8
Second sound → At, Fermi, Furthermore, Massachusetts Institute, MIT, Researchers, Technology, Université Grenoble Alpes
related to Description · 5
Second sound → Also, Contrary, Normal, Second, Umklapp
related to In helium II · 5
Second sound → At, Helium II, II, Second, The
related to In other media · 5
Second sound → Bi, BKT, In, NaF, Second
has application · 3
Second sound → Measuring, Oscillating, OST
is a · 2
Second sound → quantum mechanical phenomenon in which heat transfer occurs by wave-like motion, wave-like phenomenon which makes it very different from usual heat diffusion

Important terminology Word statistics

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Important terminology

sound second heat temperature thermal observed helium also normal superfluid phenomenon ii molecules speed wave-like conductivity waves diffusion wave momentum

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Second soundis aquantum mechanical phenomenon in which heat transfer occurs by wave-like motion0.90text
Second soundis awave-like phenomenon which makes it very different from usual heat diffusion0.90text
Bi in the temperature range of 1.2 to 4.0 K with a velocity of 780instance ofand in some dielectric solids0.80text
the viscous heat equationsinstance ofand was later captured within generalized transport frameworks0.80text
where hydrodynamic heat transport is described beyond Fourier diffusioninstance ofand was later captured within generalized transport frameworks0.80text
thermal backflowinstance ofhydrodynamic transport in solids has been linked to phenomena0.80text
the formation of heat vorticesinstance ofhydrodynamic transport in solids has been linked to phenomena0.80text
which are observable in the steady-state regime rather than only in transient dynamicsinstance ofhydrodynamic transport in solids has been linked to phenomena0.80text
Second soundhas applicationMeasuring0.60section
Second soundhas applicationOscillating0.60section
Second soundhas applicationOST0.60section
Second soundrelated to BibliographySinyan Shen0.60section

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