John Cuthber
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Everything posted by John Cuthber
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If I get a good analytical balance and calibrate it at the equator then move it to the North pole it needs recalibrating. Part of that change is because the Earth isn't a perfect sphere, but part of it is because the Earth rotates. I can do that experiment without needing to know about anything else in the cosmos or relativity and I can deduce that the Earth spins. Similarly I can set up a Foucault's pendulum and, from its motion I can tell that the Earth is rotating. What would be the outcome of doing these experiments on the Moon? My guess is that would show the Moon to be rotating once a month. I also guess that that is a lot nearer to the sort of answer that the OP wanted.
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I think I might get the first of those printed on a T shirt.
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Have you thought about preparative scale HPLC? It would be expensive to set up, but once you get it working you can use it for MDMA and also for any further similar work you do. BTW, what do you plan to do with the other isomer?
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No, they would still be useful for things like cutting tools.
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If the reaction were exothermic or endothermic in both directions it would violate the principle of conservation of energy. As Homer Simpson once said "In this house we obey the laws of thermodynamics!"
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Generally, just once. However, it tastes sweet (like glycol) and it gets spilled so pets sometimes drink it. Also it's a matter of definition. If I drink moonshine and some bastard has spiked it with methanol, does that count? Spectroscopic grade alcohol still smells like alcohol to me.
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Most of them are nuclear power. Solar power is nuclear power, but with the reactor 93000000 miles away. Wind and hydroelectric power are solar power, but you don't build the solar collectors yourself. Coal is solar power that's very old. Geothermal power is a rather big slow nuclear reactor and hydrogen isn't really an answer because you can't mine it. It might have been worth adding tidal power to the list.
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It's possible that lots of different groups become engineers, but only the engineers are actually able to do anything that brings them to the attention of the authorities. There might be zillions of terrorists with English literature degrees, but writing iambic pentameter defaming the government doesn't get you arrested.
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It's possibly useful to note that the UK birth rate isn't keeping pace with the death rate. (or at least it wasn't doing so recently- things might have changed since I checked the figures) Without immigration we would have a falling population. That's not generally good for an economy. Also many, if not most, of these people are adults; they can, in principle, already contribute to the net worth of the country in a way that "native born" Brits can't. They aren't just any adults either; they were resourceful enough to get here so they have already proved that they can work towards a well defined goal. That's one up on a lot of people. We need immigrants in just the same way that they need us. What I'm not sure about is how much we need the BNP. BTW love the video Bascule.
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The first post in this thread refers to the importance of free speech and, by implication, free reporting (by the bbc or by other media). This link provides some insight into one journalist's experience of the BNP's view on free reporting. http://www.timesonline.co.uk/tol/news/politics/article7027047.ece Anybody got any thoughts on it?
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Is it practical to make Sodium Hydroxide
John Cuthber replied to NATT's topic in Inorganic Chemistry
The stuff I buy is pretty clean. I guess it depends where you buy the it. -
Is it practical to make Sodium Hydroxide
John Cuthber replied to NATT's topic in Inorganic Chemistry
Why? -
I'm fairly sure that diacetyl (which smells like that and is yellow) is a by-product of ordinary yeast fermentation- it's found in beer in small quantities early in the fermentation but is reduced to butane diol later on during maturation of the beer. Could ordinary yeast be getting into your fermenter?
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How much would it cost to go to the moon and live there as a civilian?
John Cuthber replied to JoeOh's topic in Physics
I think I could pretty much use a nuclear submarine as a "house". They aren't cheap. Then I need to ship it to the moon at $3 a gram. I think this one weighs about 540 tons http://en.wikipedia.org/wiki/USS_Nautilus_(SSN-571) Since I can't afford to ship myself to the moon, never mind a house, I can't be bothered doing the arithmetic. -
Science is mean to people whose ideas suck
John Cuthber replied to swansont's topic in Other Sciences
I still think I'm at more risk of being eaten by a shark because my jam based repellent didn't work than of being attacked by a vampire because the pendant didn't work. -
Science is mean to people whose ideas suck
John Cuthber replied to swansont's topic in Other Sciences
Life is mean to people whose ideas suck. Science generally won't kill you for having a bad idea like thinking that strawberry jam will act as s hark repellent; reality will. -
Massive Entry Heats Up Atmosphere
John Cuthber replied to VedekPako's topic in Astronomy and Cosmology
It depends on whether the author thinks it helps the plot. -
If lye made it change colour then it wasn't gold (or at least pure gold) in the first place. What are you on about anyway?
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"Secondly to establish a date of publication." I doubt that many people will be trying to claim precedence on this.
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Half of the Cl bonds to the Mn. MnO2 + 4 HCl --> Cl2 + H2O + MnCl2
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ROFL It's not font size that's important. The whole point I was making was that thermal energies are too small to affect nuclear reactions. However at high enough temperatures (for example in the sun) nuclear reactions do take place (but very slowly ,which is why the sun is still going after billions of years). To really influence the rates you need to get up to much higher temperatures. It's not brain surgery- so it's a pity you didn't understand it.
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Also, please don't try to explain it in txt spk.
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Terminal Illness - Pulling the Plug or Forcing the Fight: Where is that line?
John Cuthber replied to iNow's topic in Ethics
"However, are you in favour of assisted death, if the person wishes to end their lot? " Yes. Also you need to realise that healthcare is an infinite sink for cash. It doesn't matter how much you spend, people will still suffer and die. The question of how much you spend is political, so morality and ethics go out of the window. This problem is generally swept under the carpet unless, as you put it "you publicise your cause in the media"