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seen Dec 2 '13 at 23:39

Mar
2
comment What made us think that Earth moves around the Sun?
@MarkRovetta All the historical accounts I've encountered agree with this. The phases of Venus were an unignorable problem for the geocentric model.
Mar
2
comment What made us think that Earth moves around the Sun?
To expand on your question, the reason why the geocentric model is reasonable is because the stars are so far away that there is almost no parallax. Their distance makes it seem as if they are literally attached to fixed locations in a celestial sphere.
Feb
20
comment Is it really possible to walk on water?
Magicians are often incredibly intelligent people who are very knowledgeable about the psychological shortcomings of humans... such as how commonly and thouroughly our own brains fool us. That's the short answer. :) To @Nijankowski's point, here's a YouTube video of such a material.
Feb
16
awarded  Enthusiast
Feb
14
comment origin of magnetic field in a permanent magnet
clearly the Physics Establishment is trying to silence you, user1843090. in 100 years, textbooks will describe the battle that you, user1843090, faced against the entrenched ideologies of our current times. "many fought against the revolution brought on by user1843090, but ultimately for naught, for the vibrance of the ideas themselves cleaved a winding but successful path through the darkness of stubborn physicists."
Feb
14
comment origin of magnetic field in a permanent magnet
@user1843090 Your concern was shared by physicists when they were trying to figure out the atom. Classical physics can't account for an electron in an orbit that doesn't radiate away its momentum the way a planet does (if I'm not mistaken). The reason it's possible for the electron to be in a stable orbit is "because" of its quantum character. Because the electron can only exist in fixed orbits about the nucleus, it can't radiate away infinitesimally tiny amounts of energy, so it can't radiate away energy except in discrete jumps. I personally don't know why there is a lowest orbit, though.
Feb
14
answered origin of magnetic field in a permanent magnet
Feb
7
awarded  Critic
Feb
5
awarded  Editor
Jan
31
answered Equivalence principle question
Jan
25
answered What's the source of electricity for the human brain?
May
23
awarded  Supporter
May
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awarded  Teacher
Apr
12
answered Reference request: Susskind-Glogower original paper