Waves: physical waves and imaginary waves.
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Waves: physical waves and imaginary waves

Friends, I am giving you a small exposition of what the classical wave concepts and the modern quantum foundations could consist of.

1.- In classical concepts, waves are oscillations transmitted through (or along) a fluid, consisting of the transmission of energy through this fluid by thrust and oscillation of this fluid medium.
It is similar to the transmission of a force by making an object move, which, through this movement, implicitly carries the momentum or inertia applied by the force, but in this case, since the fluid cannot move, what it does is to transmit this momentum by means of deformation and oscillation of the fluid.
Of course, here it happens that when transmitted by deformation, this produces some wear of the momentum or applied force, ending up losing all this force due to wear of the fluid deformation.
Therefore, oscillation is synonymous with wear due to fluid stress and deformation, and therefore due to loss of momentum and energy.

2.- Notwithstanding, quantum mechanics has "thought" of other types of waves or oscillations that are much less physical, but with much more capacity to adapt to our desires and pretensions, and that is leading us to the definition of a parallel world with many imaginary solutions and inventions, although far from the physical reality of the elements.
A) In the first place, imaginary waves (let's call them quantum) do not need a substance that oscillates or transmits them; they can be composed of vacuum and be transmitted in the vacuum.
B) They can form wave packets also without substance, which oscillate according to our needs.
For example, if we consider a photon, this can be a very small packet of waves. But if we need it, as in the case of the double slit experiment, then this package can expand its waves up to 10^20 the dimensions of the photon in order to interfere as a shock wave (a photon of 10^-25 m. could reach to expand up to 10^-1 m).
C) In addition, imaginary waves (string theory, superstrings, etc.) do not have energy waste and are of infinite oscillating motion.
That is, they are ideal waves totally: In the vacuum, without substance, without waste of energy, of near infinite expansion along the vacuum.
D) Of course, with these imaginary advantages, quantum waves can take us to fantastic worlds with virtual duplication of particles, with quantum entanglement, with influences and management of the observer on physical events, etc.
Something wonderful; of course, imaginary and fictitious
E) Of course, all of this leave "proved" with formulas based on an imaginary basis (egg wave function, uncertainty, etc.) that explain everything to us, or tell us that this is not from our living environment, but from an unappealable world quantum.
Well, as you can see I am quite critical of these theories and ways of seeing waves.
But hey, surely I could be wrong.

Thanks friends