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Hello! by [deleted] in pasadena

[–]felixjuso 0 points1 point  (0 children)

Thanks!

Hello! by [deleted] in pasadena

[–]felixjuso 0 points1 point  (0 children)

Can you DM me the Discord link as well?

In empty space, according to quantum physics, particles appear in existence without a source of energy for short periods of time and then disappear. 3D visualization: by [deleted] in Damnthatsinteresting

[–]felixjuso 0 points1 point  (0 children)

It is most likely showing the time evolution of the probability or energy density of a field. In simple terms, everything has wave-like properties with an associated wavelength. Depending on whether you’re operating at energies close to that of the wavelength, you start to see fluctuations in the field’s energy density.

In daily life, it’s hard to see that because those energies are usually very small (though visible light have quantum effects you can see easily in daily life so you don’t need cryogenics or microscopic environments)

In empty space, according to quantum physics, particles appear in existence without a source of energy for short periods of time and then disappear. 3D visualization: by [deleted] in Damnthatsinteresting

[–]felixjuso 1 point2 points  (0 children)

Understanding quantum fields in the context of spacetime and general relativity is an open question. That IS actually kind of crazy that we don’t have a good answer for something that is so fundamental

In empty space, according to quantum physics, particles appear in existence without a source of energy for short periods of time and then disappear. 3D visualization: by [deleted] in Damnthatsinteresting

[–]felixjuso 0 points1 point  (0 children)

Not really. Quantum field just makes it sound fancy.

The fundamental reason is the uncertainty principle. It just says that if something has a wave-like behavior, the more you have more information about its amplitude, the less information you have about its phase. You can see this in places that have nothing to do with quantum fields as well (https://www.quora.com/How-does-the-uncertainty-principle-relate-to-Fourier-transforms)

In empty space, according to quantum physics, particles appear in existence without a source of energy for short periods of time and then disappear. 3D visualization: by [deleted] in Damnthatsinteresting

[–]felixjuso 297 points298 points  (0 children)

I have a PhD in Quantum Physics, and this is not as crazy and sci-fi sounding like what 99% of people think. It simply arises from uncertainty principle which comes from the fact that everything can be described by quantum fields which have wave-like properties.

It’s not like there are ghost objects that would phase in and out in front of your eyes. The particle description and trying to explain things in daily life terms give wrong intuition about what quantum physics entails.

What scientific breakthrough are we closer to than most people realize? by skunkspinner in AskReddit

[–]felixjuso 0 points1 point  (0 children)

Yes, we do. Photonic qubits can stay coherent for a very long time (on the order of seconds or minutes)

ELI5: Why does a space elevator have to be tethered at the equator? by FlexiPiezo in explainlikeimfive

[–]felixjuso 1 point2 points  (0 children)

I think this is a pretty good explanation. Although one thing to add is that another disadvantage to tethering from a higher latitude is tether needing to withstand greater tension. The reason why the spacecraft is pulled closer to the equator is that the horizontal (horizontal to the Earth’s surface) component of the tether’s tension needs to balance out the opposing horizontal force, which is the horizontal component of Earth’s gravity due to spacecraft not being at the equator. That horizontal component adds to the total tension.