This may have a focusing effect, which can cause a number of waves to join together.
When used in this form in the mathematical description of series of spectral lines, the result is the number of waves per unit length, or the wave numbers.
The Arabs migrated into North Africa from Arabia in a number of waves; the first of those waves occurred in the 7th century ce.
This competition marked the official birth of the sport of surfing, with judges awarding points for length of ride, number of waves caught, skill, sportsmanship, and grace on the board.
When wavelength is measured in metres, 1/λ represents the number of waves of the wave train to be found in a length of one metre or, if measured in centimetres, the number in one centimetre.
Frequency, in physics, number of waves that pass a fixed point in unit time; also the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.
The significant features in complicated sounds that people perceive and differentiate correspond to the physical dimensions of frequency (the number of waves, cycles, or vibrations per second), intensity, phase, complexity of wave form, and temporal pattern.
Wave number, a unit of frequency in atomic, molecular, and nuclear spectroscopy equal to the true frequency divided by the speed of light and thus equal to the number of waves in a unit distance.
The number of waves was considered by Francisco Rothhammer and Tom D. Dillehay (2009).
The comparative study of non-integral and integral number of waves propagating along the finite length channel is also presented.
Yesterday we saw the attack come in a number of waves and from a number of different vectors increasing in intensity along the way.
