Comic Discussion > QUESTIONABLE CONTENT
WCT: 7-11 June 2010 (1681-1685)
Newbia:
Thanks for the science lesson, Mad Cat. :)
Also, re: do men look big or small boobs? : it's not the boobs that matter, it's how you wear them. If a woman displays a lot of confidence and knows how to show off her body the right way, then she'll look sexy, no matter what body type she is.
IanClark:
--- Quote from: Mad Cat on 13 Jun 2010, 17:52 ---
--- Quote from: IanClark on 13 Jun 2010, 16:14 ---Not true! No one knows how magnets work, but it's a question that's been asked time immemorial. In fact, I often find myself wondering how fuckin' magnets work.
--- End quote ---
Magnetic fields occur whenever electrons move. Since electrons are constantly in motion about their respective nucleae, there are always magnetic fields. If the atom has an even number of electrons, then in the aggregate, for every electron orbitting in one direction, there's an electron orbitting in exactly the opposite direction and there is no net magnetic field, as the magnetic fields of the two electrons cancel each other out.
However, in some elements, notably, the metals, there is always an additional electron either present or missing, which allows individual atoms to possess a net magnetic field. However, just like the electrons around an individual nuclear, a quantity of atoms of a given element tend to be oriented randomly, which means the material is not able to build up a net magnetic field where all atoms are oriented int he same direction.
But, if enough of these "ferro-magnetic" elements are arranged together in certain molecular structures, the atoms are held in the same orientation, allowing the material to exhibit a static magnetic field unrelated to any external, physical stimulae. Such molecular arrangements fall into a number of families. Some of the most popular are AlNiCo, aluminum, nickel, and cobalt; Samarium Cobalt; and Neodymium. The magnetic properties of any of these naturally magnetic materials can be destroyed by heating, which liberates atoms from the molecular structure and thus destroys the magnetic field, and dropping or striking, which does the same, but on a much weaker scale. Likewise, ferro-magnetic materials which do not have net magnetic fields may have weak net magnetic fields imparted to them by striking them upon something hard, such as striking an iron rod on concrete. This is the result of the temporary alignment of atoms.
The technology of nMRI, or Nuclear Magnetic Resonance Imaging, is that of placing a living human in a large magnetic field, thus forcing any and all atoms which have a net magnetic field of their own to orient in place with the external magnetic field. Once so oriented, all affected tissues are bombarded by RF (radio) energy of various frequencies. Certain atoms in certain molecules will absorb the RF energy and then immediately reradiate it as a photon of light. Those photons penetrate the body to the machine's detector. Since the machine knows the frequency of RF energy it is emitting at the moment and can detect the direction from which the resonant photons are being emitted, it is possible to map the internal structures of the body without surgery by sweeping across a band of the RF spectrum and by imaging multiple slices of the body. It's like the way different colors of "neon" lights are formed by gases other than neon, xenon, flourine, hydrogen, argon, etc.
tl;dr: So, there you have it. Naturally occurring magnetic fields are the result of the alignment of atoms. No more mystery.
--- End quote ---
Y'all motherfuckers be lyin' and gettin' me pissed!
raoullefere:
--- Quote from: Mad Cat on 13 Jun 2010, 17:52 ---tl; [although I did read it]: So, there you have it. Naturally occurring magnetic fields are the result of the alignment of atoms. No more mystery.
--- End quote ---
I see nothing in this explanation that tells me whether or not I need to protect my chilled viands from disgusting magnet-sex.
And on a crazier note, apparently there's some guy who claims that by applying magnets to a person's brain's right hemisphere, he can cause said person's brain to 'sense' the divine—or maybe tilt, I'm not sure which.
HiFranc:
--- Quote from: raoullefere on 14 Jun 2010, 00:04 ---[...]
And on a crazier note, apparently there's some guy who claims that by applying magnets to a person's brain's right hemisphere, he can cause said person's brain to 'sense' the divine—or maybe tilt, I'm not sure which.
--- End quote ---
That was discussed in a recent episode of "All in the mind" from ABC Radio National.
Binary:
--- Quote from: raoullefere on 14 Jun 2010, 00:04 ---I see nothing in this explanation that tells me whether or not I need to protect my chilled viands from disgusting magnet-sex.
--- End quote ---
Don't panic, raoullefere. It's magnetic flux, not magnetic fucks.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version