sravna
Well-known member
Dear Members,
While the focus is on Quantum Mechanics, let me say that there is a need to define concepts at the very basic level such as what is energy, what is mass? etc. In quantum mechanics there is the notion called wave-particle duality. That anything exhibits the properties of a wave and a particle though at different times. So nothing can be classified completely a wave or completely a particle. For example light is thought to behave like a particle sometimes and as a wave sometimes.
A particle is something which is like normal matter and wave is something which spreads and travels like a ripple in water. There are some specific properties exclusive to a wave and to a particle. So this wave-particle nature was a conundrum initially. But later it came to accepted as natural and thus this wave-particle duality concept was established.
In quantum mechanics one can only say that such and such a thing can be measured or observed with such and such a probability. There is no determinism. For example if a photon is sent through a slit in a screen to impact on another screen behind, the event of the photon going in a straight line and hitting the center of the screen is given only as a probability. There is also the probability that the photon will hit somewhere on the side of the screen though that probability is low.
Now comes a contentious part. What QM says is till the photon is measured or observed the events remain as a probability. That is the photon can hit anywhere on the screen but each with differing probability. Only when a measurement is made or when it is actually observed the probabilities collapse into an actuality and is observed at a point. That is only when it hits or is observed that the probability collapses . In QM it is known as wave collapse.
Now I will give my views on the above with a concept of a wave:
As Energy travels, it region of presence along the three dimensions increases. This I would say is because anything that moves begins to lose its harmony. When the energy has not yet entered the realm of matter this manifests as a sort of splitting i.e., duplication of it and so it seems to spread. BTW, in the case of a particle the loss of harmony is expressed as increase in mass.
Also and pertinent to the discussion is that the amplitude of the wave keeps varying with time. So when the amplitude is low, there is less frequent occurrence of energy at distant points because low amplitude energy traveling to distant points is less likely, and so the probability of occurrence of them at distant points would seem to be low as described by the mathematical wave equations.
So my view is that, what is seen as probability is more due to a real phenomenon of variations in amplitude as in the case of observing a photon etc. at a particular position. Probability in measurements of other properties may be due to similar reasons.
While the focus is on Quantum Mechanics, let me say that there is a need to define concepts at the very basic level such as what is energy, what is mass? etc. In quantum mechanics there is the notion called wave-particle duality. That anything exhibits the properties of a wave and a particle though at different times. So nothing can be classified completely a wave or completely a particle. For example light is thought to behave like a particle sometimes and as a wave sometimes.
A particle is something which is like normal matter and wave is something which spreads and travels like a ripple in water. There are some specific properties exclusive to a wave and to a particle. So this wave-particle nature was a conundrum initially. But later it came to accepted as natural and thus this wave-particle duality concept was established.
In quantum mechanics one can only say that such and such a thing can be measured or observed with such and such a probability. There is no determinism. For example if a photon is sent through a slit in a screen to impact on another screen behind, the event of the photon going in a straight line and hitting the center of the screen is given only as a probability. There is also the probability that the photon will hit somewhere on the side of the screen though that probability is low.
Now comes a contentious part. What QM says is till the photon is measured or observed the events remain as a probability. That is the photon can hit anywhere on the screen but each with differing probability. Only when a measurement is made or when it is actually observed the probabilities collapse into an actuality and is observed at a point. That is only when it hits or is observed that the probability collapses . In QM it is known as wave collapse.
Now I will give my views on the above with a concept of a wave:
As Energy travels, it region of presence along the three dimensions increases. This I would say is because anything that moves begins to lose its harmony. When the energy has not yet entered the realm of matter this manifests as a sort of splitting i.e., duplication of it and so it seems to spread. BTW, in the case of a particle the loss of harmony is expressed as increase in mass.
Also and pertinent to the discussion is that the amplitude of the wave keeps varying with time. So when the amplitude is low, there is less frequent occurrence of energy at distant points because low amplitude energy traveling to distant points is less likely, and so the probability of occurrence of them at distant points would seem to be low as described by the mathematical wave equations.
So my view is that, what is seen as probability is more due to a real phenomenon of variations in amplitude as in the case of observing a photon etc. at a particular position. Probability in measurements of other properties may be due to similar reasons.
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