
Originally Posted by
fatman57
so if you don't mind me asking what is a 'defined' wave?
It is a wave that has been clearly defined by whoever is talking about it. In this case we don't have one. The terms "wave" and "wavelength" are being bandied about so loosely that it is quite clear that those using the terms in this loose fashion have no idea what they are talking about.
Without a clear definition, or a situation in which the definitions are well-established by convention, there is little use in trying to have a precise discussion. Lacking a periodic function, or anything that appears to be even a restriction of a known periodic function to some interval, there is no meaning to "wave" or "wavelength".