Wikipedia:WikiProject Physics/Missing physics topics/15

Missing physics topics: Sound, Time, and Research Methods

Sound

 * Acoustic absorption coefficient -
 * Acoustic capacitance -
 * Acoustic grating -
 * Acoustic inertance -
 * Acoustic mass, acoustic stiffness -
 * Band pressure level -
 * Diffraction of sound -
 * Dispersion of sound -
 * Electrophonic instrument -
 * Laplace equation for velocity of sound -
 * Loudness level -
 * Refraction of sound -
 * Resonance theory of hearing -
 * Sensation level -
 * Sound absorption coefficient -
 * Sound condensation -
 * Sound distortion -
 * Sound energy reflection coefficient -
 * Sound flux -
 * Sound pitch -
 * Sound-wave photography -
 * Specific acoustic impedance, reactance and resistance -
 * Summation tone -
 * Warble tone -

Time

 * Advanced time -
 * Dilute thromboplastic time (TDT/DTT) -

Research methods

 * Borda's weighing method -
 * Cyclotron resonance experiments -
 * Density measurement -
 * Fizeau Method fizeau method -
 * Frequency measurement -
 * Ion pair chromatography -
 * Lithium experiment -
 * Neutron spectrometry -
 * Nuclear Densitometer Test -
 * Perturbation method -
 * Radiochemical laboratory -
 * Radiological survey -
 * Scattering measurement -
 * Siberian Snake, physics experiment -
 * Total-reflection X-ray Fluorescence Analysis -

Mathematics

 * Age equation, age theory, fermi age theory - - Radiometric dating
 * Apjohn's formula -
 * Bateman equations - - Bateman transform?
 * Berthelot's equation of state - - see Real gas
 * Besser function - - typo for Bessel function?
 * Biot-Fourier equator - (equation?)
 * Bloch's functions - - Bloch wave or Bloch equations depending on context.
 * Boltzmann's formula - - Boltzmann equation, Boltzmann's entropy formula, Boltzmann distribution
 * Canonical equation - (of what?)
 * Carnot-Clausius equation - - is this something different to Clausius theorem?
 * Cauchy dispersion formula - - a quick google search suggests this might be the same thing as Cauchy's equation
 * Clausius' equation of state - - Real gas?
 * Clausius' equation - - Real gas?
 * de Broglie equation - - see Matter wave
 * Dieterici equation of state - - Equation of state
 * Dissipation function Rayleigh's dissipation function viscous dissipation function -
 * Dushman's equation -
 * Einstein's photoelectric equation - - see Photoelectric effect
 * Error equation - - Error function?
 * Fermi-Dirac distribution function - - Fermi–Dirac statistics
 * Finkelstein diagram -
 * Galilean transformation equations - - see Galilean transformation
 * Gaussian lens formula - - google suggests this is Lens (optics)
 * Hartmann formula -
 * Helmert's formula - - see Earth's_gravity (or possibly Helmert transformation)
 * Kelvin's formula - - Kelvin equation?  Something else named after Kelvin?
 * Kirchoff formula - - Kirchhoff equations, Kirchhoff's theorem, Kirchhoff's law of thermal radiation?
 * Legendre equation and polynomials -  Legendre polynomials, Legendre's equation
 * Massieu function - - Free entropy
 * Maxwell's formula - - Maxwell distribution? Maxwell's equations?
 * Morse equation - - Osmotic pressure
 * Newton's equations of motion - - Newton's laws of motion
 * Newton's formula - - could be one of several things!
 * Plank's formula - - Planck's law
 * Point function - - Point spread function?
 * Proper function and value - - presumably related to Proper function
 * Psychrometric formula - - Psychrometrics?
 * Quadrupole radiation formula -
 * Radial wave equation -
 * Radiometric equation - - Radiometric dating
 * Rayleigh phase function -
 * Rayleigh-Jeans formula - - Rayleigh–Jeans law
 * Reduced equation of state - - probably best covered in Equation of state
 * Reflection density -
 * Richardson's equation, Dushman's equation, Richardson-Dushman equation -
 * Routh's procedure -
 * Sellmeier's equation - - Sellmeier equation
 * Stark-Einstein equation - - Photoelectrochemical processes
 * Statistical radiophysics -
 * Stoke-Kirchhoff equation - (probably Stokes)
 * Tossing ionic equation -
 * Total ionic equation -
 * Transient Time Correlation Function -
 * Van de Waals equation of state - - Van der Waals equation
 * Van der Waals surface tension formula - - described in Surface tension
 * Wien's formula - - Wien's law