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Everything posted by swansont
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Resolving Special Relativity & Quantum Mechanics
swansont replied to nstansbury's topic in Speculations
Unfortunately, the "hard maths" are an absolute requirement for verification. -
As opposed to the heaps of nutters who can't stand the idea of a woman president. However, assuming the safety of the Obama is secured (and he wins): being veep is no lock to becoming president. Bush the elder did it, but does anyone know when the prior occurrence was of a sitting vp being elected president? [hide]1836. Martin Van Buren.[/hide]
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I remember doing this. deja vu
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the nth derivative of velocity
swansont replied to Quartile's topic in Modern and Theoretical Physics
use "math" instead of "tex" -
You can see the guy enter on the right at about 1:30 on the B/W security cam and start filming, which is the second angle shot. How long until someone comes out with a (non-hack) cellphone/taser combo?
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You received infractions for specific posts, so you should be able to figure it out. Or maybe not. The plagiarism was shorthand for the "copyright violation/plagiarism" infraction, where you posted someone else's copyrighted work, and did not take it down, even after someone else provided a link to the work, and you acknowledged the presence of the link. But the copyrighted material was still up, two hours later, when I logged on. I'll correct the notation. I didn't give you the flaming infraction, that was another mod, and the thread hijack was pointed out by a third mod — I just beat him to the punch in tagging the post. The suspension was AUTOMATIC at that point, because of the infraction points you racked up. And you should recognize the reality that your sheer volume of posting probably saved you from other, minor infractions that could have been handed out, or infractions that were not assessed because the suspension was in place before those threads were reviewed. You have a choice, as does anyone who posts here of following the rules or not. If you don't, you pay a price. If you fail to learn from your mistakes, you will eventually be history. —— Locked, because this is not up for negotiation or discussion.
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This is just unit conversion. You need to convert cal to kcal, C to F and g to lb. (When converting C to F you don't care about the offset between them, because your interested in the change in temperature) For example you can multiply by [math]\frac{1 lb}{454 g}[/math] (or the inverse) because the two values are equal, so it's equivalent to multiplying by 1.
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Resolving Special Relativity & Quantum Mechanics
swansont replied to nstansbury's topic in Speculations
And this sidesteps my point that the experiments did not show slowed light because of the temperature. BECs are being used to make gravimeters. How will their behavior be affected from your contention about mass changing? Is there, in fact, some specific unexplained behavior of BECs that needs to be addressed, as you imply? I note you predict gravity is instantaneous. Any other consequences on relativity that could be measured? How do you reconcile this with the measurements that show that gravity propagates at c? Any actual measurable, specific predictions? How does one falsify your claims? -
global warming: salvaging fact from heaps of BS
swansont replied to gib65's topic in Ecology and the Environment
I see you continue to miss the point about that exchange. There's also volcanic activity -
Resolving Special Relativity & Quantum Mechanics
swansont replied to nstansbury's topic in Speculations
That's often where one deviates from science into philosophy or metaphysics. Light doesn't slow down uniformly when passing through cold matter — it is very strongly wavelength-dependent and works near an atomic resonance — and this is a function of the state preparation. People have done slow light experiments without getting the vapor cold. http://www.iop.org/EJ/abstract/0295-5075/82/5/54002 -
I think it's a little too late for some of that. SUVs have seriously reduced trade value these days, and I imagine moving is a little tough with the housing market, unless you're willing to sell below value. What kills me is that we have the capability of cleaning up CO2 and reducing oil demand by going solar and nuclear, and yet congress piddles around with short-term extensions on the tax breaks for solar. Solar electric may be more expensive right now, but at least the money can stay here, rather than going overseas.
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global warming: salvaging fact from heaps of BS
swansont replied to gib65's topic in Ecology and the Environment
I don't see how that makes this "not from published literature." If the data were published, then it is a graph of published data. If it's wrong, I would like a link to what's wrong about it, rather than an (currently) empty claim. -
global warming: salvaging fact from heaps of BS
swansont replied to gib65's topic in Ecology and the Environment
Wouldn't both of these result in warming? The graph shows a decrease in forcing from both, which would be from an increase in volcanic activity and decrease in solar. Then please demonstrate it. -
Motion question (Help would be greatly appreciated)
swansont replied to scilearner's topic in Physics
You obviously had a vertical component to get the answer. What was it? -
DavyJonesLoquet suspended (3 days) for multiple counts of thread hijacking.
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the nth derivative of velocity
swansont replied to Quartile's topic in Modern and Theoretical Physics
Vibration is well-explained using the first two derivatives of position wrt time. When you get past the third derivative, you basically stop getting physical meaning — I don't think anybody has bothered to name higher derivatives, since they don't tend to show up in any solutions to motion. -
Been breathing popcorn fumes a little too much?
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Forgive me quoting myself, but I recently addressed this http://www.scienceforums.net/forum/showpost.php?p=410859&postcount=29 Slow light happens because you prepare a sample with a really sharp resonance, and use light near that resonance.
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This happens with gravitational forces — there's a point at which you overcome the electron degeneracy, which is how neutron stars are formed. I'm not seeing a situation where the field would require this, however. Electric fields have a divergence related to the charge, so I think (it's early yet) the only way to get the field you want is to already have assembled opposite charges via some other force.
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Or, the short version: It assumes point masses. If you can't reasonably assume that, you have to break the problem up into manageable pieces where the assumption holds.
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That works if there's no air resistance. If there is, the trip down can take longer.
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This, like your other strawmen, is not what is being claimed. The conclusion that hydrinos don't exist is because of the evidence and the well-established theory that does exist. "Counter-intuitive" wasn't in the picture until you photoshopped it in.
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Car, girlfriend, hobby that costs money: pick one.