To nullify means to render ineffective. If you nullify a contract. a warranty, or even a marriage, the effect is as if the thing had never happened. In law ( which is sometimes redundant ) things are sometimes said to be null and void - that is, nothing and nothing. Another example of legal redundancy is the term cease and desist which literally means: stop and stop.
Although they are not true examples of this type of wave, the waves on the surface of water approximate _ transverse _ waves. 7. The distance between two successive wave crests (or troughs) is called the. _ wavelength _ of the wave. 8. The height of a wave crest (or depth of trough) above the original undisturbed surface is called the _ amplitude _ of the wave. 9.
The wavesâ periods (the lengths of time for successive crests or troughs to pass a single point) are very long, varying from five minutes to more than an hour. These long periods, coupled with the extremely low steepness of the waves, enables them to be completely obscured in deep water by normal wind waves and swell.