John Cuthber
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Everything posted by John Cuthber
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Is the 'Rage Virus' possible even in principle?
John Cuthber replied to Fanghur's topic in Microbiology and Immunology
I think you will find it's perfectly possible in French. -
Which is the most difficult undergraduate academic major?
John Cuthber replied to Unicorn_Prince's topic in Science Education
And I, in much the same way, would have struggled with physics or maths and probably failed; but I found chemistry relatively easy (apart from bits of it). That's my point. It's utterly subjective (if you pardon the pun). I think CharonY's answer was probably as accurate as any can be. -
Quite a lot of them have subsequently been arrested. In principle they all would be if they could be identified. They would all get punished. The fact that some people commit crimes doesn't directly affect the issues of right and wrong.
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"I think it is arguable that there are only 3 senses in humans" Which one tells you that you are hungry, or that it's time to go to the toilet? Aristotle thought we had 5 senses because he thought the number 5 had some mystical significance. Actually we have rather a lot. For example you are in trouble if you lose this one http://en.wikipedia.org/wiki/Proprioception
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The flame test for sodium is very sensitive, sodium atoms are really good at giving out yellow light. Also the eye is very sensitive to yellow light so if there's more than the tiniest trace of sodium present you get a yellow flame. You may have heard the suggestion that most dust round the house etc is dead skin cells. Those cells are covered in sweat which is salty. Sodium gets everywhere.
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"6. Carbon © Carbon, the element known for creating the complex molecules that, in turn,make you, is also a very easy elementto find." Oh dear, if someone has copyrighted carbon we are all in trouble. "well over $1000 for a cube 1.61inches long, which is a troy ounce." Wrong. That's not a troy ounce it's a few pounds. "What you will find (at thecenter, encased in a few shells of aluminum) is 0.9 micrograms of americium" Nope, you will get something like 0.9 microcuries. Perhaps you should sort out the typos, put the spaces in the right places, then correct the other errors.
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Superfast Military Aircraft Crashed in Pacific Ocean, DARPA Says
John Cuthber replied to nec209's topic in Politics
"Initial indications are that the aircraft impacted the Pacific Ocean along the planned flight path." Unless that thing is also meant to be a submarine, the ocean wasn't part of the planned flight path. Perhaps someone should explain to DARPA that they need to programme in the altitude information as well as latitude and longitude. Or perhaps they ought to make sure their press releases are not ambiguous. -
Which is the most difficult undergraduate academic major?
John Cuthber replied to Unicorn_Prince's topic in Science Education
I studied chemistry so I know roughly how much effort I put into that . I didn't study physics or engineering so I have no idea how much effort they would take. How can I judge the relative difficulties of a collection of subjects I didn't do? To me the whole poll seems to be based on guesswork. -
Mark, just to let you know, it's possible to post in green ink here. Though it's damned hard to read.
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"How do Darwinists explain the Human brain!!!"" Probably without the use of three exclamation marks.
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It is probable, but not certain that some of the NaCl would precipitate. In general it isn't possible to calculate this sort of thing- you need to make the measurements. In that regard it is just the same as other sorts of solubility data. You can't calculate the solubility of salt in water, but you can measure it or look it up in a table. You can't predict the solubility of NaCl in, for example, 10% sugar solution. It's probably not in any table, so you would need to measure it.
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Bacteria can, to a degree, modify their behaviour in response to the environment. Some for example, form spores and/ or drop their growth rate to near zero when resources are scarce. However their normal pattern of behaviour is unrestrained growth. So far as I can see, thus far, humanity has always acted like the bugs in a Petri dish. Discussing the finer points of logical discourse is rather like rearranging the deck chairs on the Titanic.
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"It's like explaining to a blind child what colour is, once this blind child comprehends colour, he/she is no longer blind." To be blunt, that's bollocks. The kid would still walk into walls.
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"It is much more natural to observe that when a piece of ice is frozen and when it melts there is no reverse process of freezing to see before concluding the ice has melted ." Or, equally, It is much more natural to observe that when a puddle of water is liquid and when it freezes there is no reverse process of melting to see before concluding the water has frozen. "Natural" just depends on where you start from. I would only be inclined to call you a halite if you were a chlorite or bromite.
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Only a handful of elements give a result with a flame test and you can't tell, for example, boron from copper or barium because they all give a green flame. A spectrometer will give much better specificity. Also, if there's any sodium present (and there generally is) most of the colour you see is the yellow from that.
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Would a scroll compressor work as a compressed air motor ?
John Cuthber replied to Externet's topic in Engineering
Love the comedy sound effects. -
How often do "cheap" and "precision" end up in the same product? (except in the case of truly mass-market things like CPUs)
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Being poisoned/ drugged, where to take sample for testing?
John Cuthber replied to davisdesigns's topic in Medical Science
I will not eat salad; I don't like it. I am quite partial to ice cream but I still don't see this working. you "I would like you to eat this ice cream" me "Why?" you "Because I think it is poisoned" me. "FOAD" -
Why have you posted the same question twice?
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If you choose to define "melting " as turning into a pink bird and flying away then you are welcome to do so. I just don't see the point of redefining words to mean something other than their normal meaning.
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This "For clarity , Melting is independent of reversibility and need not rely on reversibility for it's proof ." is an assertion made without any proof. It is at odds with the usual meaning of the word "melting".
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Then the answer to your original question is "yes for some definitions of melt, but no for other definitions". Which is, as far as I can see, pointless.
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Mass immigration & economic problems in USA and Europe
John Cuthber replied to Greg Boyles's topic in Politics
I'm intrigued to see how many things are "patently obvious" (from a man who lives on a smallish island where the birth rate is less than the death rate and where the population would fall if it were not for immigration)