And by wave parameters, I mean the frequency, wavelength, period, speed, and amplitude. One that describes a wave's energy is the amplitude. In a transverse wave, the amplitude can be seen as the height of the crests.hus, the volume is proportional to the amplitude of the sound wave. The frequency of a sound wave is perceived as pitch. Humans can detect pitches within the acoustic range of 20 to 20,000 Hz, but we can't detect ultrasound or infrasound.
part and parcel definition, part and parcel meaning | English dictionary. part. 9 a component that can be replaced in a machine, engine, etc. 9 a component that can be replaced in a machine, engine, etc. part.
Parcel post. Parcel post is a postal service for mail that is too heavy for normal letter post. It is usually slower than letter post. The development of the parcel post is closely connected with the development of the railway network which enabled parcels to be carried in bulk, to a regular schedule and at economic prices. Today many parcels also travel by road and international shipments may travel by sea or airmail.