Is It Possible For Us To Phase Through Solid Matter?

I actually mean being able to for example, walk through the wall. Seems like a thing of fiction right ?

Hmmm........ Mostly true, because we hardly see any of that happen in real life but the truth is......it's kinda complicated.
There are elementary particles depending on the type and scenario that can be made to pass through solid objects but like I said before, it's complicated. Photons of certain electromagnetic waves such as X-rays and gamma rays have high frequencies and thus very low wavelength, this gives them high penetrating power but then it also depends on the thickness of the solid material of which they are passing through. In the DC's flash movie series, he (the flash) is able to phase through solid objects with the help of vibrating his body, I am not very familiar with the specific kind of physics that was used there but it is not totally wrong. The reason is because there's a part of physics, the popular quantum mechanics that suggests matter can behave like waves and waves can behave like matter (wave-particle duality), this has been confirmed experimentally up to molecular level. In this wave-particle duality there's what is called the matter waves (to distinguish it from electromagnetic/light waves), this matter waves possesses what is called the "de-Broglie wavelength". Flash's body is made up of molecules and atoms, therefore he should be made up of matter waves too, to give him higher penetrating power, he needs to increase his momentum, either by running or vibrating but at a very high velocity probably close to that of light - this is according to the mathematical relationship governing the de Broglie wavelength. The problem with this flash technique, if it were to be the actual case is that in real life the energy required would be too large, almost impractical and you could die or the object could get destroyed while moving at such speed, the body, especially the human body won't be able to stand the temperature - the temperature would be very high.

There's this popular belief that we are mostly made up of empty space, this is because the distance between the nucleus of an atom and the closest electron is incredibly larger than the size of the closest electron. Just for comparison, if we happened to magnify an atom such that it's size is that of a football ground (stadium), then the size of a nucleus would roughly be the size of a seed of beans. We are not however really concerned with the size of the nucleus but that of an electron, an electron classically speaking is believed to be by far smaller than that of the nucleus. Wow, that's a very big space in between the nucleus and the closest electron, there are also spaces in between different atoms and molecules. With this, it's logical to say that if we could align the molecules and atoms of solid objects, including us in away that the they can pass through this spaces, then it's possible for one solid object to move through another. Yet, we don't see this happen, why ?

Great question, it's because that belief is not totally true, in fact, that's a misconception based on a classical and old picture of an atom - Bohr's model. The modern picture which is based on quantum mechanics tells us that a single electron exists as a cloud surrounding the nucleus and this cloud represents it's probability of distribution around an atom. This means those places we think of as empty spaces (between the nucleus and the electron) has a nonzero chance of having an electron - the electron seems to be everywhere around the nucleus. In addition to this, there are forces present like the strong repulsive electromagnetic force that can prevent solid objects from moving through each other. If you manage to overcome the electromagnetic force, it's still not enough, you would still face another obstacle which is the "Pauli exclusion principle", it's a quantum mechanical principle governing fermions and electrons are fermions under normal conditions.

Let's not give up yet, there's actually another way. Familiar with quantum tunneling?

This is also another quantum mechanical effect where there's always a nonzero chance of passing through a potential barrier depending on the distance. This is specifically the case for quantum particles, especially their wave nature. We are made up of quantum particles and so therefore we should expect that if we are very close to a particular side of our kind of wall or possibly touching it, we should exist at the other (opposite) side.
Well, the calculation doesn't say you wouldn't exist at the other side, in fact, the probability isn't zero, it's a very small number but close to zero. What this means is that if you are to get any successful attempt(s) you would need to do it an infinite number of times. Now remember this is going to take you time - performing infinite experiments, the estimated time to carry out these experiments and achieve any possible success could take you more than the current age of our universe (13.8 billion years), that's like waiting almost forever. 🙀
Would you have the time to wait this long ?
Definitely not, plus you would be long dead before completing the experiments. Oh boy, I think I better go look for something better to do with my relatively small lifetime.

Well, I guess it's safe now to give up. 😂
Unless may be there's some yet discovered law/principle that could make one move through the wall without much stress. Until then, let's just keep enjoying our science fiction for enjoyment sake.

I think this is where we round up, have a thoughtful and lovely day, and see you when next we meet again.

For further reading

Here's The Reason You Can't Actually Walk Through Walls, According to Science

Is it theoretically possible for a person to pass through a solid wall/object?

Phasing through solid matter: Fact or Crap?

Matter wave

De Broglie wavelength

Pauli exclusion principle

Quantum tunnelling

Thank you all once again for stopping by to read my jargons and also thank you @stemng, @lemouth and the @Steemstem team for your valuable supports.

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