Monthly Archives: November 2011

Entanglement omnibus!

We’ve recently gotten several short questions about entanglement.  In keeping with other, better, “ask” services: entanglement omnibus! Q: What is entanglement? (nobody asked this, but it’s a good place to start) A: If you understand what correlation is, then you’re … Continue reading

Posted in -- By the Physicist, Particle Physics, Physics, Quantum Theory | 8 Comments

Q: How are imaginary exponents defined?

The original question was: How do you do xi (x to the i power), and how on Earth was it developed?  There isn’t really anything to base xi on from previous rules of exponents as it is a completely new … Continue reading

Posted in -- By the Physicist, Conventions, Equations, Math | 29 Comments

Q: Why do nuclear weapons cause EMPs (electromagnetic pulses)?

Physicist: The weapon itself doesn’t cause the EMP (or not much of one).  The pulse is actually generated by the weapon’s effect on the Earth’s ionosphere. An EMP is just a sudden change in the electric and magnetic fields, which … Continue reading

Posted in -- By the Physicist, Physics | 18 Comments

Q: How does the expansion of space affect the things that inhabit that space? Are atoms, people, stars, and everything else getting bigger too?

Physicist: Way back in the day Edwin Hubble (of telescope fame) noticed that the farther away a galaxy is, the faster it’s moving away from us.  From this he figured out that the universe is expanding, but in a very … Continue reading

Posted in -- By the Physicist, Astronomy, Physics | 20 Comments

Q: What would Earth be like if it didn’t turn?

Physicist: The side of the Earth facing the sun would quickly become hotter than boiling water, and the side facing away would be cold enough for the atmosphere to freeze solid (condense into nitrogen and oxygen ice).  So all of … Continue reading

Posted in -- By the Physicist, Astronomy, Physics | 14 Comments

Q: According to the Many Worlds Interpretation, every event creates new universes. Where does the energy and matter for the new universes come from?

Physicist: There is no new energy or matter (or even new universes), it’s just that how it’s distributed depends on who’s asking, and in what “world” they’re doing the asking.  The important thing is: the universe doesn’t split or spawn … Continue reading

Posted in -- By the Physicist, Physics, Quantum Theory | 28 Comments