John Cuthber
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Everything posted by John Cuthber
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If you can get a syphon that runs uphill then we have solved the problem (And most of the world's other problems too)
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Sure looks that way.
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That's not a very informative link.
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Intelligence of different political factions?
John Cuthber replied to Alfred001's topic in Psychiatry and Psychology
I'm not sure that IQ "is a good measure of intelligence (though I'm sure there's some correlation)." One side is noted for its opposition to critical thinking. https://www.insidehighered.com/quicktakes/2012/06/29/texas-gop-vs-critical-thinking -
Intelligence of different political factions?
John Cuthber replied to Alfred001's topic in Psychiatry and Psychology
If you take having a university degree as a proxy for "intelligence" and you consider the two sides of the debate on the UK leaving the EU as "political factions". (both of which are very much debatable) then yes. http://www.theweek.co.uk/89378/fact-check-did-uk-s-better-educated-vote-remain But it's not clear to what extent "having a degree" is actually just a proxy for "being young". -
You can start by learning about it.
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Interesting irony. https://mercyforanimals.org/straws-arent-the-real-problem-fishing-nets
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A Question for Trump or "Ford and the Chicken Tax"
John Cuthber replied to studiot's topic in Politics
The bits highlighted by Stringjunky, Dimreaper and others about food standards which are subject to regulation. -
A Question for Trump or "Ford and the Chicken Tax"
John Cuthber replied to studiot's topic in Politics
The relevant regulatory authority was FERA. The Tories sold it to Capita. https://www.gov.uk/government/organisations/the-food-and-environment-research-agency -
A Question for Trump or "Ford and the Chicken Tax"
John Cuthber replied to studiot's topic in Politics
Well, you are sort of half-right. The government which doesn't want regulation did away with many of the regulators. They sold off FERA. They cut numbers in other , similar departments like safety (and, indeed, the police). So the "ever expanding army of 'Regulators'" just isn't real. But they have succeeded in getting you to blame the people who are trying to make it better. -
A Question for Trump or "Ford and the Chicken Tax"
John Cuthber replied to studiot's topic in Politics
In both the US and UK the party in power did not get the majority of the vote. -
A Question for Trump or "Ford and the Chicken Tax"
John Cuthber replied to studiot's topic in Politics
I am being robbed of the opportunity to choose. The proposed action includes the removal of labeling which would let me know if my food is made to a "rat hair free" standard. -
A Question for Trump or "Ford and the Chicken Tax"
John Cuthber replied to studiot's topic in Politics
The Brexiteers call it "taking back control". -
What is the strongest animal of prey?
John Cuthber replied to John Harmonic's topic in Other Sciences
I doubt anyone cares but a contest between a 450Kg cat and a 600Kg bear might be less one-sided than you would expect. https://en.wikipedia.org/wiki/Liger -
The pedigree system and domestic Dogs
John Cuthber replied to naitche's topic in Evolution, Morphology and Exobiology
The "purpose" of show dogs is to win prizes, and they are bred for that purpose. Their environment is the show-ring. It doesn't matter what your intention is, inbreeding - which is sadly the norm for "pedigree" dogs- ia a bad thing. -
I thought it wasn't so much "sort of Democrat" but Anti American, Anti freedom and presumably Anti motherhood and apple pie.
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Use less, or dilute them.
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For making of fragrance which volatile oil is unique as base oil?
John Cuthber replied to runasyrst's topic in Chemistry
I think castor oil mixes much better with alcohol than the other vegetable oils do. What do you mean by "unique"? -
Oxidation by air is sufficient to get it to go brown. You get formation of aldehydes and then reactions like this https://en.wikipedia.org/wiki/Maillard_reaction It's likely that the material is still fairly pure; the brown colour may be due to far less than 1% of impurity. And redistillation (under vacuum if you have that option) will probably clean it up
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Not quite, for a start you won't be able to get the electrode potential to (e.g.) 2.5 volts because all the energy will go into making hydrogen. Also the voltage depends on the concentration https://en.wikipedia.org/wiki/Nernst_equation so there's isn't a specific voltage for a given element, there's a specific voltage/ concentration curve (and that's temperature dependent too). You can sometimes get it to work in simple mixtures- you could separate copper from iron. It's also important to recognise that there are two voltages in a cell- one at each electrode. The solution isn't at the same potential as either of them.
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well... sort of. The voltage needed to get something out of solution also depends on the concentration- the more of it there is, the easier it is to extract. There's another factor, there are hydrogen ions in sea water (not many but...) and so, if you get the voltage high enough (well, low enough- they plate out on the negative electrode) you start to "plate" hydrogen gas onto the electrode. Similarly, for elements that need to be oxidised to convert them to the element (chlorine is an obvious one in this context) you have a competition with production of oxygen. And hydrogen production happens before most metals come out of solution. About the only useful things you could get would be chlorine, bromine and (maybe) iodine. If you have metal salts at reasonably high concentrations in water it is possible to extract them in the way you suggest. The voltage needed is related to the electrode potential. https://en.wikipedia.org/wiki/Electrode_potential And there are tables of them https://en.wikipedia.org/wiki/Standard_electrode_potential_(data_page)
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Amended means changed.
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Incredible Camera at 10 Trillion frames/second!
John Cuthber replied to beecee's topic in Science News
A bus goes past my house at exactly 8 am every morning. If I take a picture at 08:00:00 today and 08:00:01 tomorrow then 08:00:03 the day after tomorrow, and so on, would you say I was taking a picture every second? -
My current job as a scientist (essentially outside the field of biology) would be pretty safe regardless of evolution. However, If I stopped paying attention to evidence- in the way the OP has-I'd be in trouble rather soon. Good question. Did you mean entropy? If so, what you have done is illustrate that you haven't done enough research to form a sensible opinion on the matter. What I don't understand is why the OP has come here and posted stuff that was addressed ages ago- at length. Surely they can't be dumb enough to think they are going to convince anyone of anything, so I guess it's just graffitti. It's the equivalent of writing the name of your favourite sports team on a wall with spray paint. Dumb, and antisocial.