Can an airplane go through a quantum tunnel

In summary: This is possible because the particle, as a wave, has a non-zero probability of existing on the other side of the barrier, even if it doesn't have enough energy to get there by classical means. So in essence, the particle is borrowing energy for a moment to get over the barrier, and then giving it back on the other side. Now, this phenomenon is well-documented and studied in the microscopic world, where particles behave according to quantum mechanics. But when you try to apply it to macroscopic objects, like a plane, it falls apart. This is because macroscopic objects are described by classical mechanics, which does not allow for particle-wave
  • #1
bobsmith76
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3 years ago when I lived in Jordan I met a Palestinian who believed that he had unified gravity with quantum mechanics. I knew enough about physics to know that that was a very hard thing to do but I didn't have the knowledge of course to tell if he was right. He certainly knew a lot about physics. I just looked up some experiments and some phenomena on wiki and asked him about them and he knew how all of the experiments were done and he had explanations for all of the bizarre phenomena that I had never heard of. I also knew another particle physicist from Saudi and I wanted the two to get together so that I could find out if the Palestinian was really on to something, I could never arrange that mostly because my desire to find out if he was as smart as he said he was, was not strong enough. Anyway, he wrote a 7 page paper about how he thought that this flight:

http://en.wikipedia.org/wiki/Air_France_Flight_447

had gone through a quantum tunnel. The wiki article cites the cause of the crash as follows:

While the investigation is still awaiting formal conclusion, preliminary reports of the BEA stated that the aircraft crashed following an aerodynamic stall caused by inconsistent airspeed sensor readings, the disengagement of the autopilot, and the pilot making nose-up inputs despite stall warnings, causing a fatal loss of airspeed and a sharp descent. The reason for the faulty readings is unknown, but it is assumed by the accident investigators to have been caused by the formation of ice inside the pitot tubes, depriving the airspeed sensors of forward-facing air pressure.

I of course didn't have the requisite knowledge to evaluate the paper but even with a common sense ability to understand argument I could tell that he didn't cite any facts about the airplane or the weather. It was pretty much just an assertion that the plane went through a quantum tunnel, then he listed an equation which I did not understand and that was it. I also remember that he thought particles going through a quantum tunnel could travel faster than the speed of light.

My question here is do you think the guy was full of bs or not?
 
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  • #2
what's a "quantum tunnel"?
 
  • #3
bobsmith76 said:
My question here is do you think the guy was full of bs?

Yes, it seems awfully likely, just on general principles. I don't have any specific physics to back that up but I'll be surprised if more knowledgeable folks here don't.
 
  • #4
bobsmith76 said:
3 years ago when I lived in Jordan I met a Palestinian who believed that he had unified gravity with quantum mechanics. I knew enough about physics to know that that was a very hard thing to do but I didn't have the knowledge of course to tell if he was right. He certainly knew a lot about physics. I just looked up some experiments and some phenomena on wiki and asked him about them and he knew how all of the experiments were done and he had explanations for all of the bizarre phenomena that I had never heard of. I also knew another particle physicist from Saudi and I wanted the two to get together so that I could find out if the Palestinian was really on to something, I could never arrange that mostly because my desire to find out if he was as smart as he said he was, was not strong enough. Anyway, he wrote a 7 page paper about how he thought that this flight:

http://en.wikipedia.org/wiki/Air_France_Flight_447

had gone through a quantum tunnel. The wiki article cites the cause of the crash as follows:
I of course didn't have the requisite knowledge to evaluate the paper but even with a common sense ability to understand argument I could tell that he didn't cite any facts about the airplane or the weather. It was pretty much just an assertion that the plane went through a quantum tunnel, then he listed an equation which I did not understand and that was it. I also remember that he thought particles going through a quantum tunnel could travel faster than the speed of light.

My question here is do you think the guy was full of bs or not?

So far as I understand what this guy has said, seems total bs. The phrase quantum tunnel is actually a real one to describe real phenomenon. This involves particles 'tunneling' through a potential barrier to reach a lower energy final state (you can think of it as 'borrowing' energy for a moment to get over a tall hill before you give it back). But any extension of this concept to include a real 'physical' tunnel is almost certainly nonsense.

Now, some popular accounts of quantum physics will tell you that if I am persistent enough and try to walk through a wall, I will eventually do so, but it will take something like 10^10^500 (I made this number up, the point is it's very large) tries. This is, in essence, a naive application of the tunneling effect I described above applied to macroscopic systems. The idea is that since I am composed of a ton of elementary particles, each of them would have to tunnel independently through the barrier, which is why the probability is so fantastically small, it is basically zero. However, even an explanation like this is a little troublesome because of decoherence, basically the complication that macroscopic objects are not described by QM, but rather by classical mechanics. Some others can speak more about this, but it's worth noting.
 
  • #5
This thread is misplaced. The humor thread is in the General subforum.
 
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  • #6
Quantum tunneling is not relevant to large objects, I'll explain why at the end.

Essentially, quantum tunneling is when a particle is able to traverse a barrier because of particle-wave duality. By 'barrier', I refer to anything from the barrier preventing a field in a false vacuum from reaching a true vacuum, to an actual, physical, barrier.

Since a particle will take several paths compromising it the wavefunction it travels through spacetime, some will manage to traverse the barrier. Since wavefunctions make a completely random decision based off of probabilities where to collapse, it may collapse to the egienstate of the particle that was, say, on the other side of a wall.

For this to occur to large objects, it would need to happen simultaneously to every single particle compromising the macroscopic object. The probability of this happening is so low, so close to zero, that you could probably take up all of physics forums severs trying to write it out.

In short, the guy was full of it.
 

1. Can an airplane really go through a quantum tunnel?

Currently, there is no scientific evidence to support the idea that an airplane can go through a quantum tunnel. Quantum tunnels are a phenomenon that occurs on a subatomic level and have not been observed or replicated on a macroscopic scale.

2. How is a quantum tunnel different from a regular tunnel?

A quantum tunnel is a phenomenon in which a particle can pass through a barrier that it does not have enough energy to overcome. This is due to the probabilistic nature of particles on a subatomic level. In contrast, a regular tunnel is a physical structure that can be traversed by larger objects such as cars or trains.

3. Is it possible for technology to create a quantum tunnel large enough for an airplane to pass through?

At this time, it is not feasible to create a large-scale quantum tunnel for an airplane to pass through. The technology and understanding of quantum mechanics is currently limited and it would require a significant amount of energy and resources to manipulate particles on such a large scale.

4. Could an airplane travel faster by going through a quantum tunnel?

There is no evidence to suggest that an airplane could travel faster by going through a quantum tunnel. The laws of physics still apply in a quantum tunnel and it is unlikely that the speed of an airplane could be significantly increased through this method.

5. Are there any potential dangers or risks associated with an airplane going through a quantum tunnel?

As the concept of an airplane going through a quantum tunnel is currently theoretical, there is no way to determine the potential dangers or risks. However, given the complexity and unknown nature of quantum mechanics, it is possible that there could be unforeseen consequences or challenges associated with attempting to manipulate particles on such a large scale.

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