imatfaal
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Posts posted by imatfaal
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1 minute ago, Doctordick said:
Latex seems to work fine now. The problem was apparently in my presumption that it would work in the preview mode!!
And it seems that one must refresh to see it even when posted. But I like the rendering, and loads of extra gadgets on right click. The hover to zoom is very useful for those of us with imperfect vision
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51 minutes ago, Doctordick said:
y=∫f(x)dx
[LaTeX] y = \int f(x) dx [/LaTeX]
\] y = \int f(x) dx \]
How do I get latex to work???
\( equation in line \)\[ equation in block \]checking \(F=ma_{centripetal}=mr \omega^2 \)
\[ \omega^2=\frac{a_{centripetal}}{r} \]
Straight [latex] tags no longer work - although [math] tags apparently do - but it is much quicker to type as above
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Today I learned that the Toyota symbol represents the end of a needle and a string passing through the opening.
And the Hyundai represents the seller and the buyer shaking hands.
Please, post links to your sources for those of us who have further interest. Thanks.
At least for Toyota that might be difficult
http://www.toyota-global.com/showroom/emblem/passion/
The old one was really impressive (flying kanji for toyoda)
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Apply the above for the standard model of particles including the Higgs field under action via
[latex] \stackrel{Action}{\overbrace{\mathcal{L}}} \sim \stackrel{relativity}{\overbrace{\mathbb{R}}}- \stackrel{Maxwell}{\overbrace{1/4F_{\mu\nu}F^{\mu\nu}}}+\stackrel{Dirac}{\overbrace{i \overline{\psi}\gamma_\mu\psi}}+\stackrel{Higg's}{\overbrace{\mid D_\mu h\mid-V\mid h\mid}} +\stackrel{Yugawa-coupling}{\overbrace{h\overline{\psi}\psi}} [/latex]
and voila you just incorporated every SM field into your spacetime curvature using action. Every field contributes in some fashion.Excellent post as always Mordred. And because I could never contradict you on physics, I will take this opportunity to take a mild shot at your nomenclature
It's Yukawa coupling and Higgs (no apostrophe; named after him not his possessive - which would mean anyway that the apostrophe would be after the s )
Now awaiting the Skitt's Law moment...
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Today I learned that forensic investigations have been in use since the 13th Century.
http://discovermagazine.com/2017/jul-aug/catching-a-criminal
I have learnt that Forensic no longer means what it used to mean. Forensic means to me "pertaining to the courts of law" and "suitable to being part of the factual pleadings in court" - it seems that through the use of forensic as an adjective in front of words like science and medicine has morphed the meaning such that Forensic now means Forensic Science.*
So regarding the discovery magazine article - that may well be the first forensic science but definitely not the first forensic investigation; just off the top of my head Cicero details some forensic investigations (often forensic accountancy) and that would be 1400 years earlier
* I also blame CSI and its ilk
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Moderator Note
Huge diversion in which Tar seemed to challenge theory without background, aim, or reason has been broken off to speculations.
If we are discussing Philosophy then do so - using misrepresentations and shoddy understandings of current theory in an attempt to shed light on the philosophy of science is doomed; if you start your logical argument with an incorrect premise then all that follows is pretty worthless.
Please stick to the topic - and use examples you actually understand otherwise members will, unsurprisingly, take issue with the abuse of the theory rather than the point it was meant to illustrate
Do not respond to this moderation within the thread
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Today I learned that a bottle nose dolphin's brain is 1.5 to 1.7 kg and is heavier than human's brain 1.3 to 1.5 kg.
But we all know which one is the more advanced species:
“For instance, on the planet Earth, man had always assumed that he was more intelligent than dolphins because he had achieved so much—the wheel, New York, wars and so on—whilst all the dolphins had ever done was muck about in the water having a good time. But conversely, the dolphins had always believed that they were far more intelligent than man—for precisely the same reasons.”
Douglas Adams - The Hitchhikers Guide to the Galaxy
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Today I learned 3 and 5 year olds have far too much energy. If I could harness it in a humane fashion I would solve the energy crisis. Especially when you add sugar to the equations
You would not be the first looking to harness the energy content of children - although your idea is, slightly, more humane
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Moderator Note
I have locked this thread because it has been pinned by one of our experts - the explanation by Matt Strassler is good but the video lecture by Sean Carroll seems to be rated as excellent. These notes will serve as a mini repository for future questions - and may be expanded. However, I do not want a pinned thread to be open for discussion - this would allow the potential addition of many less desirable pieces of mis-information from the slightly misconstrued to the full-blown deepak-chopra.
The discussion so far has been first rate and any of the discussants should feel free to re-open a new thread to continue. Any future resources that are of a similar quality can be appended by a member of staff.
thanks
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A lateral 'hole' is a 'tunnel'.
Some of the wells in Sakhalin and in Qatar are very deep - but also have a a huge lateral component. If my memory serves me correctly the Sakhalin holes are 12000m deep with 7000 metres lateral - definitely not a tunnel; whereas the real biggies in Qatar are 12000m deep with 10000m lateral. But still an oilwell and not something I would call a tunnel
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I wondered about that as well. The article did says the longest was an oil well but didn't say what that meant. The article also referenced a SciShow video link which it did not provide. Perhaps the details are in that nonexistent video link.
Oil wells can go considerable (10km) lateral distances too
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Holborn area of London; not sure I could find it again nor that I would want to! I went there with some Brits who had been working in Warsaw and their Polish friends now working in London.
I know a few people in London who fear that one of the most tragic consequences of Brexit will be the loss of the Polish Bars - they then panic and say "what I mean is the vibrant multiculturalism, ethnic diversity, and richness brought to our nation by all our fellow EU members living and working here" but what they are thinking is the Polish Bars, the new array of delicatessens and food shops with brand new tastes, and a much better selection of beers in all the off-licences.
Writing that very tongue in cheek paragraph above has made me realise how true it is. Not the bit about it being the worse part of Brexit - but the fact that London will be really boring, nasty, and diminished if those isolationist scum get their way. It might just be enough to get me moving from the city I love and have lived in or around most of my life.
Sorry the Official Jokes Section has taken a turn for the maudlin
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Today I learned that there is a wikipedia article about wikipedia.
There is a wikipedia page about the wikipedia page about Wikipedia
What are you listening to right now?
in The Lounge
Listen to the whole album and try to work out the time signature on each piece. A work of genius. Blue Rondo a la Turk (my fave) the first track on side A is written in both an unusual 9:8 and has a 4:4 side rhythm