moneyfree2020

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The point is that dummy photons emitted by down converters can travel a much greater distance than their signal partner photons. But no matter what distance the blank photons travel, the picture on the screen will always coincide with whether the blank photons are recorded or not.

[moneyfree2020]

In the experiment, it is possible to determine which path to the screen the signal photon chose by observing which idle photon-partner emitted from the down-converters.

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Using fully reflecting mirrors positioned on the sides, the two beams are brought back together and directed towards the detector screen. Considering light in the form of a wave, as in Maxwell's description, an interference pattern can be seen on the screen.

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A beam splitter, which is a semitransparent mirror, is placed in the path of the source of photons - a laser. Typically, such a mirror reflects half of the light incident on it, and the other half passes through. But photons, being in a state of quantum uncertainty, hitting the beam splitter will choose both directions simultaneously.

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The essence of the experiment is reduced to the famous experiment with two slits with a delayed choice, which was proposed in 1980 by physicist John Wheeler. There are many options for implementing such an experiment, one of which was given .

[moneyfree2020]

First of all, the question arises - how can you reliably find out what has not happened yet? After all, all our knowledge about the future always comes down to only forecasts, and forecasts are not suitable for such experiments.

[moneyfree2020]

It is necessary to reliably find out whether one specific event in the future (which will be the object of research) will come true or not. If it comes true, it means that a chain of events led to this event coming true. Then we have the opportunity to influence the course of the experiment and make sure that this event does not come true. Whether we will succeed in doing this is not yet clear.

[moneyfree2020]

If we take the current moment of time as a given point, then the need to move into the past disappears, as well as a large number of difficulties associated with such a movement disappear. It remains only to find out the chain of events that should occur in the future, and try to break this chain in order to obtain an alternative development of the future. Actually, we don't even need to know the complete chain of events.

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But before we understand whether we can change the past, it is necessary to determine whether we can change the present and the future. After all, the essence of any changes in the past comes down to a change in subsequent events relative to a given point in time to which we want to return.

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But I suppose it will be

Traveling to the past is associated with a large number of difficulties that greatly limit the possibility of such a journey. At this stage in the development of science and technology, I think it is premature to take on the implementation of such ideas.

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Usually I do not do theoretical physics

Therefore, if there are inaccuracies and errors, I hope for a constructive discussion in the comments. But I could not get past this topic. Every now and then new ideas appeared in my head, which over time formed into a unified theory. I somehow do not want to go myself to the past or the future in which no one expects me.

[moneyfree2020]

I think I managed to get positive

And also consider practical ways of transferring information between the present and the future. If you are also concerned about these issues, then welcome under cat.

[moneyfree2020]

Just the other day

What actually have I been doing during the last days. The study is based on Einstein's theory of relativity and relativistic effects, along the way also touching upon quantum mechanics and superstring theory.