Re: Matter / Antimatter
csmyth3025":25uzlyqn said:
Although matter/mirror-matter and anti-matter/anti-mirror-matter may both be relevant to weak beta decay, I'm not sure that the notion that matter and anti-mirror-matter will not annihilate has been established.
I think the logic goes like this:
Feynman said 'Basically the Lee-Yang experiment showed that only the left-handed attributes of particles and the right-handed attributes of anti-particles participate in Weak interactions.'
My interpretation of the above is this: The interaction or annihilation that occurs between an electron (matter) and a positron (anti-matter) will not occur between Matter and Anti-Mirror-Matter because they are both, in a way, 'left handed', they are asymmetrical ? Left does not interact with left ? The charges and attributes are all reversed.
So they will not annihilate ?
Nor will an interaction occur such as that between Matter and Mirror-Matter because, where the Lee-Yang experiment has shown that thru weak-beta decay the clock and the mirror-clock keep different times ... a clock and a mirror-anti-matter-clock will keep the same time ( I tink).
So if neither type of interaction occurs then they do not interact at all .... which, I suppose, in a way, is the same as saying Dark Matter or Dark Energy.
But I am far from the insights of Feynman, and my explanation may have nothing to do with the reasons he believed that no interaction would occur.
csmyth3025":25uzlyqn said:
Also, although sugar and saccharin are mirror image molecules and saccharin cannot be digestd biologically due to its "left-hand" twist, I'm not sure there is any evidence that this property of molecular biology extends to physical processes or to atoms.
Feynman uses both in his lecture on Symmetry. And remarks on the above, 'this may be the greatest achievement of mankind, to discover that we are all descended from a single 'ancestor' who chose right instead of left. He was not referring to life on Earth, but to the Cosmos ( I tink ) I may have the words wrong. He was referring to the fact that the Universe displays 'handedness' ... there is a difference between right and left, north and south, that can be measured by weak-beta decay. And that this difference governs cosmic-evolution or asymmetry.
At the molecular level, not the molecular biology level, this symmetry between left and right can be seen in the matrix (chiral ?) that locks the molecules together. And I think this was the point of his lecture, that matter can be assembled in four shapes ?
csmyth3025":25uzlyqn said:
Like MW, I'm still having a hard time picturing what a mirror image hydrogen atom would look like or how it would be different from a regular hydrogen atom.
Chris
I don't quite understand this. The four forms of matter can be made, according to Feynman, in our labs, in theory, from matter and anti-matter. All these particles have been confirmed ... so are you proposing a new-particle ? Its the asymmetry between the four forms of matter that govern they're interactions, not a new atom ?
This is a very loose explanation of the Lee Yang experiment, and you should check for yourself. If you take a bar of cobalt and wrap a magnetic field around it and freeze it down and then count the number of electrons coming off the north pole and the number coming off the south pole you would expect them to be equal. But they're not. This is because of weak beta decay. Reflexion Symmetry is broken. Turns out this is true for all matter not just frozen cobalt.
So now if you place a mirror behind the cobalt bar you see a mirror image of your experiment.
But the mirror image is reversed thru all its symmetries, this includes the flow of the field (note you have to use a right hand rule) so the electrons being emitted will not tally with the mirror symmetry. There is now nothing to stop you removing the mirror and replacing it with a mirror-image-cobalt-experiment built out of ordinary matter ? You only have to reverse the field.
This is the same as saying that if you stand in front of the mirror and lift your left hand, then the man in the mirror lifts his left also, according to weak beta decay. Reflexion Symmetry is broken.
You cannot shake hands or interact with such a person, in the normal way ?
cool bananas ... greg