The ratio of this name is the ratio of the high and low voltage points in a transmission line system, which can be used to find impedance via a bolometer, and a like-named ratio of maximum to minimum dilatation is used in acoustics.  Classical cavity electromagnetic modes are of this form, but the use of that fact to predict a blackbody spectrum results in the erroneous Rayleigh-Jeans law.  Schr?dinger modified the Bohr model of the atom by treating electrons as these, which may be considered as a superposition of oppositely directed waves of equal amplitude, frequency
The ratio of this name is the ratio of the high and low voltage points in a transmission line system, which can be used to find impedance via a bolometer, and a like-named ratio of maximum to minimum dilatation is used in acoustics.  Classical cavity electromagnetic modes are of this form, but the use of that fact to predict a blackbody spectrum results in the erroneous Rayleigh-Jeans law.  Schr?dinger modified the Bohr model of the atom by treating electrons as these, which may be considered as a superposition of oppositely directed waves of equal amplitude, frequency, and wavelength.  FTP, identify these types of waves so named because they appear to be stationary.
The ratio of this name is the ratio of the high and low voltage points in a transmission line system, which can be used to find impedance via a bolometer, and a like-named ratio of maximum to minimum dilatation is used in acoustics.  
standing waves (accept voltage standing wave ratio in the first sentence)