discussions on nuclear physics
ZenchowdaH: do you know what a photon is?
iamme013: vaguely
ZenchowdaH: its a packet of electromagnetic energy, travels on waves. it has no rest mass, no charge, but it has momentum, and travels at the speed of light. when one of these babies comes close to a highly charged nucleus, it just fuckin splits into an electron and a positron, both shooting off in opposite directions, at the speed of light. they eventually slow down, and lose their kinetic energy. when they do that, they get real close to each other til they stop moving, and they do something called "pair annihilation", where they just turn back into 2 photons, both shooting off in opposite directions, at the speed of light.
ZenchowdaH: this is happening constantly. everywhere.
iamme013: where there is light
ZenchowdaH: not even necesarily that. could be IR, UV, microwave, gamma, radio, any electromagnetic wave
iamme013: wtf dude who coded this universe
iamme013: what do you know about dark matter/
ZenchowdaH: nothing. it may or may not exist. a guy named mordehai milgrom thinks that newton's laws dont work on that scale
ZenchowdaH: modified newtonian dynamics is his theory
iamme013: is it possible newtonian laws only apply locally?
iamme013: like, in other galaxies, completely different laws apply?
ZenchowdaH: no, no no
ZenchowdaH: its the scale.
ZenchowdaH: on a scale thats reasonable to us, 1st 2nd and 3rd laws work fine
ZenchowdaH: action-reaction, cool, whatever.
ZenchowdaH: what milgrom didnt like was that at the edge of galaxies, theres a flat rotation curve. the speed of the stars at the edges of galaxies should go down as the distance from the center increases. this doesnt happen once you reach a certain distance.
ZenchowdaH: they came up with dark matter to compensate for that
ZenchowdaH: some heavy stuff was pulling on these stars, making them move faster
iamme013: so dark matter is a way of saying, we dont really know wtf is going on, but this theory might explain it
ZenchowdaH: so when gravitational forces become very small, planck scale, the acceleration equation (Force=mass*acceleration) becomes more like Force=(mass * acceleration^2)/a0 (where a0=rate of acceleration that will take you to the speed of light in the lifetime of the universe)
ZenchowdaH: yeah, thats exactly what it is
ZenchowdaH: and this applies when the force of gravity is less than one ten-billionth of a meter per second/second
iamme013: this is so weird, im actually a little familiar with this part
iamme013: vaguely
ZenchowdaH: its a packet of electromagnetic energy, travels on waves. it has no rest mass, no charge, but it has momentum, and travels at the speed of light. when one of these babies comes close to a highly charged nucleus, it just fuckin splits into an electron and a positron, both shooting off in opposite directions, at the speed of light. they eventually slow down, and lose their kinetic energy. when they do that, they get real close to each other til they stop moving, and they do something called "pair annihilation", where they just turn back into 2 photons, both shooting off in opposite directions, at the speed of light.
ZenchowdaH: this is happening constantly. everywhere.
iamme013: where there is light
ZenchowdaH: not even necesarily that. could be IR, UV, microwave, gamma, radio, any electromagnetic wave
iamme013: wtf dude who coded this universe
iamme013: what do you know about dark matter/
ZenchowdaH: nothing. it may or may not exist. a guy named mordehai milgrom thinks that newton's laws dont work on that scale
ZenchowdaH: modified newtonian dynamics is his theory
iamme013: is it possible newtonian laws only apply locally?
iamme013: like, in other galaxies, completely different laws apply?
ZenchowdaH: no, no no
ZenchowdaH: its the scale.
ZenchowdaH: on a scale thats reasonable to us, 1st 2nd and 3rd laws work fine
ZenchowdaH: action-reaction, cool, whatever.
ZenchowdaH: what milgrom didnt like was that at the edge of galaxies, theres a flat rotation curve. the speed of the stars at the edges of galaxies should go down as the distance from the center increases. this doesnt happen once you reach a certain distance.
ZenchowdaH: they came up with dark matter to compensate for that
ZenchowdaH: some heavy stuff was pulling on these stars, making them move faster
iamme013: so dark matter is a way of saying, we dont really know wtf is going on, but this theory might explain it
ZenchowdaH: so when gravitational forces become very small, planck scale, the acceleration equation (Force=mass*acceleration) becomes more like Force=(mass * acceleration^2)/a0 (where a0=rate of acceleration that will take you to the speed of light in the lifetime of the universe)
ZenchowdaH: yeah, thats exactly what it is
ZenchowdaH: and this applies when the force of gravity is less than one ten-billionth of a meter per second/second
iamme013: this is so weird, im actually a little familiar with this part