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Rayleigh may refer to:

Science

*Rayleigh scattering
*Rayleigh–Jeans law
*Rayleigh waves
*Rayleigh (unit), a unit of photon flux named after the 4th Baron Rayleigh
*Rayl, rayl or Rayleigh, two units of specific acoustic impedance and characteristic acoustic impedance, named after the 3rd Baron Rayleigh
*Rayleigh criterion in angular resolution
*Rayleigh distribution
*Rayleigh fading
*Rayleigh law on low-field magnetization
*Rayleigh length
*Rayleigh number, a dimensionless number for a fluid associated with buoyancy driven flow
*Rayleigh quotient
*Rayleigh–Ritz method
*Plateau–Rayleigh instability explains why a falling stream of fluid breaks up into smaller packets
*Rayleigh–Taylor instability an instability of an interface between two fluids

Title of nobility

*Baron Rayleigh
**Charlotte Mary Gertrude Strutt, 1st Baroness Rayleigh
**John William Strutt, 3rd Baron Rayleigh, physicist, winner of a Nobel Prize in 1904
**Robert John Strutt, 4th Baron Rayleigh, physicist; son of John William Strutt

Fictional name

*Silvers Rayleigh, a fictional character in One Piece

Places

* Rayleigh, British Columbia, Canada
* Rayleigh, Essex, England
* Rayleigh (lunar crater)
* Rayleigh (Martian crater)

See also

* Raleigh (disambiguation) for a different spelling

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