W4A1V4E1L1E1N1G2T1H4S1
21 points
WAVELENGTHS is validvalid
WAVELENGTH, [n]
WAVELENGTH, the distance in the line of advance of a wave from any one point to the next point of corresponding phase [n]
WAVELENGTH, [n]
WAVELENGTH, the distance in the line of advance of a wave from any one point to the next point of corresponding phase [n]