Originally posted by Phil Hill
Then we should throw out Newtonian mechanics and Relativity? Why is it so hard for some of you guys to accept that physics and neuroscience both show freewill to be nothing more than a myth?
Then we should throw out Newtonian mechanics and Relativity?
No. Where did you get that from? Newtonian mechanics has been proven to be incomplete ( “incomplete” not to be confused with “wrong” or “useless” for it is neither those things ) by both relativity and quantum mechanics. There is currently some apparent incompatibilities between relativity and quantum mechanics but that does not mean the two are mutually exclusive but rather just means we haven't yet got a complete theory of everything and you can still describe something macroscopic with quantum mechanics.
Why is it so hard for some of you guys to accept that physics and neuroscience both show freewill to be nothing more than a myth?
what would that got to do with describing something macroscopic with quantum mechanics?
Newtonian mechanics is simply a special case of nonrelativistic quantum mechanics. Relativistic quantum mechanics incorporates the effects of special relativity successfully, however the unification of quantum mechanics and general relativity is still an open issue because gravity is so weak and it is hard to detect it on a small scale.
Originally posted by Phil HillWhat kind of elementary particles travel backwards in time? Do you have a source for this?
As far as time travel, for elementary particles it happens all the time (into the past) and "time standing still" for photons and other particles traveling at c.
BTW, if the state of any system is known. The past as well as the future can be predicted with 100& accuracy.
After measurement, the wavefunction evolves according to the Schroedinger equation with the measurement serving as an initial condition. Wouldn't this make any future measurements on the system probabilistic?
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Originally posted by amolv06In Feynman diagrams, antiparticles are often denoted as particles traveling backwards in time. But this is merely a notational/mathematical convenience, and you should not think of it as causal influences going backwards in time.
What kind of elementary particles travel backwards in time? Do you have a source for this?
When relativistic quantum mechanics was first developed, the Dirac equation appeared to predict particles going both forwards and backwards in time. The latter was first thought to be an anomaly of the theory, but it was later realized this solution represents antiparticles.
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Originally posted by sonhouseIn the US and UK it is common to earn a masters and PhD in one go (often in 3 years). For me it takes a bit longer, 2 year master + 4 year PhD (although in Finland a PhD position is basically a research position after a year or so).
I assume then you already finished your MS in physics?
Originally posted by Metal BrainTime travel into the future is simple. Find yourself a chair, sit down in it, wait ten minutes, now you have traveled ten minutes into the future. Sometimes I time travel eight hours into the future in a single night.
Is time travel possible? Many physicists say maybe in the past but not in the future. Is this true?
In the spirituality forum there is a thread called free will. I often used the free will question to provoke thought from the Jehovah's Witnesses that would knock on my door. "If god knows knows what will happen in the future how can that be compatible ...[text shortened]... way of looking at it anyway.
Is time travel into the future possible? I tend to think no.
Originally posted by CLL53And sometimes when you get stoned, it takes 16 hours to do 8.
Time travel into the future is simple. Find yourself a chair, sit down in it, wait ten minutes, now you have traveled ten minutes into the future. Sometimes I time travel eight hours into the future in a single night.
Originally posted by CLL53Sleep is a very good time machine. I often go back in time with memory freely.
Time travel into the future is simple. Find yourself a chair, sit down in it, wait ten minutes, now you have traveled ten minutes into the future. Sometimes I time travel eight hours into the future in a single night.