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Unless you approach the speed of light, according to Einstein... hence the gag, you silly cucumber.
Anyway I was only trying to make a blimmin joke about Dammit weighing things!
Nope, the mass of an object is invariant of the frame you view it from, even ones moving at large fractions of the speed of light. Anyone saying otherwise is being sloppy.
But, yes, I know you were only trying to make a joke, but you were making it WRONG and this IS the squabbling thread ;)
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Einstein himself agrees: http://dx.doi.org/10.1063/1.881171
I will send the PDF to individuals who want it but cannot access. -
Einstein himself agrees: http://dx.doi.org/10.1063/1.881171
I will send the PDF to individuals who want it but cannot access."Must spread rep...etc"
Brilliant. Thank you.
I think I can sort of see why the word "relativistic" has such a detrimental effect on the equation. -
You never have to. The bottom brackets will fix themselves before they break.
James Burke hypothesises that in 40 years (about the same time scale as fusion plants replacing thermal and nuclear fission electricity generation, if we're lucky) we will all have nano-bot factories in our homes to manufacture whatever we need from a feedstock of dirt and energy. As such, we won't need bicycle mechanics, we will just point the nano-bots at the BB and tell them to manufacture new bearings in situ
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After 40 years of inflation, even jeez might be OK with paying that.
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The above discussions don't seem to note the method of fusion used. Most people think of the tokamak thermonuclear fusion reactor, a big donut which induces fusion thermally, i.e. a plasma hotter than the surface of the Sun.
The story in the news is from the national ignition facility, where they use lasers on little pellets of fuel.
I don't know the in's and outs, but it seems more like a proof of principle than a breakthrough.
For those worried about radiation in fusion, the useful process doesn't involve using unstable fuel or products as in fission. The radiation released is in the form of neutrons. Neutron confinement technology is well developed, thanks mainly to investment in fission weapon, so there's no immediate nor accumulated danger of neutron exposure. As mentioned above, neutrons damage the confinement materials used, effectively inducing fission and leaving unstable, radioactive products.
The volume, half life and activity of this fall out are all as managable as the radioactive materials stored in your local hospital. Apparently.
I know questions have been answered on this, but I find the nuclear stability curve to be the best illustration of the fusion vs fission principle:
As usual, I'm talking out my arse, and repeating other peoples points.
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Ah yes, I suppose we did get a little derailed, but you do know what site this is?
I still don't really believe that ICF will ever be viable for power generation due to the terrible efficiency of lasers plus the difficulty in burning a fuel pellet a few times a second while managing to capture the energy efficiently. I also note that the NIF is funded from the USA's nuclear weapons programme, rather than from the department of energy.
That said,I would be most happy to be wrong here!
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Ah yes, I suppose we did get a little derailed, but you do know what site this is?
I still don't really believe that ICF will ever be viable for power generation due to the terrible efficiency of lasers plus the difficulty in burning a fuel pellet a few times a second while managing to capture the energy efficiently. I also note that the NIF is funded from the USA's nuclear weapons programme, rather than from the department of energy.
That said,I would be most happy to be wrong here!
The United States Department of Energy (DOE) is a Cabinet-level department of the United States government concerned with the United States' policies regarding energy and safety in handling nuclear material. Its responsibilities include the nation's nuclear weapons program, nuclear reactor production for the United States Navy, energy conservation, energy-related research, radioactive waste disposal, and domestic energy production.
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the NIF is funded from the USA's nuclear weapons programme, rather than from the department of energy
Even if the research on laser ignition and the parallel z-pinch program really were principally directed towards the creation of a pure-fusion weapon, the physics are applicable to power generation too. Probably more so, actually, because it seems to take a plant the size of a large factory to make a pure fusion explosion equivalent to a few kilograms of coal burning :-)
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oh man, I've just found the first page of this thread... That looked like fun...
And:
https://www.simonsfoundation.org/qua...ter-asymmetry/, hah, 10 years, three blips and that's it, null result. Sometimes experimental physics is tough.. -
That ^ could also make back scratchers obsolete
http://www.red5.co.uk/media/catalog/product/cache/1/image/413x/9df78eab33525d08d6e5fb8d27136e95/e/x/extendable_back_scratcher.jpg
Chak
Olly398
rwn
gbj_tester
Dammit
snottyotter
neu
hippy
Backstop
skydancer
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About
Science Squabbling
Posted by
@mashton
What I want to know is how this affects the price we should expect to pay for a bottom bracket to be installed.