Category Archives: Quantum Theory

Q: What are “actual pictures” of atoms actually pictures of?

Physicist: Actual pictures of atoms aren’t actually pictures at all. There are a few good rules of thumb in physics.  Among the best is: light acts like you’d expect on scales well above its wavelength and acts weird on scales … Continue reading

Posted in -- By the Physicist, Physics, Quantum Theory | 7 Comments

Q: If atoms are 99.99% space, what “kind” of space is it? Is it empty vacuum?

Physicist: This is a bit of a misnomer. When we picture an atom we usually picture the “Bohr model”: a nucleus made of a bunch of particles packed together (protons and neutrons) with other particles zipping around it (electrons).  In … Continue reading

Posted in -- By the Physicist, Physics, Quantum Theory | 16 Comments

Q: If all matter originated from a single point, does that mean all matter is entangled?

The original question was: All matter originated from a single point, does that mean all matter is entangled? If it is why do you need to create new entangled practices when doing experiments? Are there different types or degree’s of … Continue reading

Posted in -- By the Physicist, Physics, Quantum Theory | 7 Comments

Q: Before you open the box, isn’t Schrödinger’s cat alive or dead, not alive and dead?

The original question was: If I don’t open the lid of the bunker, the cat inside is either dead OR alive.  Why does Schrödinger say that the cat is both alive AND dead if I do not perform the act of … Continue reading

Posted in -- By the Physicist, Philosophical, Physics, Quantum Theory | 20 Comments

Q: What are “delayed choice experiments”? Can “wave function collapse” be used to send information?

Physicist: There are a lot of big claims made about entanglement, but there are two carved-in-stone facts that help cut through some of the more grandiose claims.  First, (maximally) entangled states always act exactly like a perfectly random state, until … Continue reading

Posted in -- By the Physicist, Entropy/Information, Experiments, Philosophical, Physics, Probability, Quantum Theory, Skepticism | 6 Comments

Q: Are there examples of quantum mechanics that can be seen in every-day life, or do they only show up in the lab?

Physicist: The weird effects that show up in quantum mechanics (a lot of them anyway) are due to the wave-nature of the world making itself more apparent.  What we normally think of as “particle behavior” is just what happens when … Continue reading

Posted in -- By the Physicist, Experiments, Quantum Theory | 24 Comments