Jump to content

John Cuthber

Resident Experts
  • Content Count

  • Joined

  • Last visited

  • Days Won


Everything posted by John Cuthber

  1. That's a very good question. I think the answer is that the ions in solution are hydrated and these hydrated ions are too big to go through the membrane pores.
  2. I realise this question "The taliban protected and supported terrorists - directly the ones responsible for 9/11. That's material support. I have no issues with that. Why do you?" wasn't aimed at me but. can I just point out that the Taliban didn't do a very good job of protecting the terrorists who were directly responsible for 9/11. Every one of them died in a plane crash. Seriously, most of them were Saudis so blaming the Afghans is a bit dumb. BTW, have you all forgotten about the other bloke who was recently freed- the one who also had no evidence against him and who was only freed as a result of the UK govt's pressure. Whatever Hicks did or didn't do seems to be a bit lost in the world of propaganda. What about http://en.wikipedia.org/wiki/Bisher_Amin_Khalil_Al-Rawi#Release_negotiation released, eventually because there really wasn't a case against him?
  3. OK, I admit I know little about clay and nearly nothing about building. Also, I realise this may be a really dumb question but, is any clay a good thing to build houses on? It seems to me that , when it rains, it would go soggy.
  4. Er? "So why is it that a weak acid like HCLO4 can be made by its conjugate pairs H+ and CLO4- " ?? HClO4 is an exceptionally strong acid.
  5. Good luck getting any animal experiments past an ethics committee. Come to that, good luck getting hold of any radioisotopes. You don't need a gamma camera; autoradiography will work quite nicely.
  6. Betina I can agree with half of this "I don't see it that way. I see Iran as a bully and the UK caving in by apologizing for being in international waters under a U.N. mandate." There's no question they are being bullies but I don't think the UK has apologised at all for this (and, of course, nor should we). Wherever they ship was, Iraq lost any plausibility when it first complained about the Brits being in Iran's waters. The location they gave was in Iraq's territory; our presence there may be questionable but it's not Iran's business to try to do anything about it. Since the Iranian forces didn't seem to know where they were... BTW, does this "You capture some British soilders, regardless if they actually did anything wrong. PArade them around and present them as an enemy threat. Suddenly, Iranians don't feel as safe. Moderates are pushed towards supporting the radicals out of fear. You milk it a little more by getting the West to make threatening remarks... you play clips of Western leaders saying things out of context, and suddenly you have a whole lot more support. People tend to forget whether their enemy actually did anything wrong." remind anyone of gitmo?
  7. I am not, nor have I ever been, someone who knew that man.
  8. In my opinion it's 42 this week but it will be a bit bigger next week, shrinking slowly after Easter; fortunately my opinion doesn't count for much. 0* infinity =42 Multiply both sides by zero (an odd opperation for a mathematician, but sort of legitimate. Division by zero is forbidden, not multiplication) and get 0*0*infinity=0 0*0=0 so I can simplify the first term and get 0*infinity =0 (zero squared really is zero; this simplification is legitimate) OK, that's one of the values you accept so we agree. This is an amusing game but contributes little to mathematics so those in charge simply banned it. Division by zero (and the equivalent multiplication by infinity) are not defined.
  9. I wrote "There is, at least potentially, another way to avoid that theoretical city's destruction. Stop acting in such a way as to make it easy for terrorist organisations to recruit followers. For example, do not detain people indefinitely without trial apparently on the basis that they are Muslims." And got the reply that "This is putting the cart before the horse. I empathize with the sentiment, but a better example could have been selected. It also fails to acknowledge the point that people are responsible for their own behavior. But as I said, I empathize with the sentiment. We can do much better on this front, and it appears that we really have no choice but to do so, since we can't keep going on like this." I haven't seen the proof, but according to one of this morning's newspapers the British man released earlier because they noticed that there was no evidence against him (the official reason for his detention was "possession of a suspicious device"; it was a battery charger) doesn't give any hope that the American Government has learned a lot about building bridges. Sure he was released as an innocent man against whom no charges had formally been made, and only 4 years late. The authorities saw fit to lead him out of jail in handcuffs and a blindfold. That's how they think one should treat the innocent (by their own admission) residents of a friendly country. If that turns out to be true then it's shameful. I think it's indefensible, does anyone disagree?
  10. It's very very nearly true, at any one time I doubt there's more than a few atoms of radioactive nitrogen in me formed by cosmic ray interactions. Of course some theories say that protons decay given time so there are no stable isotopes. I could use the ratio of the 2 stable nitrogen isotopes to look for patterns related to food etc in the same way that it can be done with carbon 13/ carbon 12 signatures. Why would they need to be radioactive? In fact, I couldn't do it with the radioisotopes of nitrogen because they are absurdly rare. Anyway since they don't last long enough to be digested there wouldn't be any point trying. I think you need to check some references.
  11. "And therefore to maintain our integrity amoungst the international community we must complete our goals." What were these goals? IIRC the major "goal" was to ensure that Saddam (who is now dead) didn't use his weapons of mass destruction (which never existed). The longer we stay there the easier it is for the likes of Bin Laden to say "look they are our enemies- they invade the countries of our brother Moslems". Only a tiny minority of Moslems are out to destroy the West, but the longer we stay in Iraq (and Afghanistan) the more difficult we make it for the moderates and the easier we make it for the radicals. Many of those in the international community think that this "war on terror" is just stiring things up.
  12. Bettina, Given that the UK has at the disposal of its armed forces everything up to and including nclear weapons I don't see how the statement "Diplomacy has to be backed up with strength which unfortunately puts the UK in a non bargaining position." makes sense. If you mean that we are weak because we try diplomacy first then I for one am quite happy to be weak.
  13. Bascule, Why would it be insane to get a pint when you ordered one? We have been drinking pints here since before there was a US of A and it seems to have worked well enough. (As Klaynos pointed out it would be illegal not to, but that's not the point; whats wrong with a pint?)
  14. I didn't make that assumption. I was pointing out that Congress could declare war and clarify the matter. They have not. Presumably that's for a reason. Their reason may actually be valid. This might not really be a war. BTW, at camp Xray the American government doesn't seem to be struggling with the rules- it simply broke them. There is, at least potentially, another way to avoid that theoretical city's destruction. Stop acting in such a way as to make it easy for terrorist organisations to recruit followers. For example, do not detain people indefinitley without trial apparently on the basis that they are Moslems.
  15. Salicylic acid is also used for wart removal.
  16. I seem to recall an incident where a well organised military force tried to extract hostages from a situation. They knew where the hostages were, they had full plans of the building, they had plenty of time to plan their raid, they had vastly superior numbers and equipment, they had full access to the building and to the surrounding area. 129 of the hostages died in the Moscow theater seige. I think diplomacy has its place.
  17. The whole thread is redundant because these things (like earwax) are not waste products. BTW, I strongly suspect that much of the liver's waste is excreted through the lungs.
  18. "When was the last time a war was officially declared?" Probably WWII but it hardly matters. The US constitution gives Congress the authority to declare war and they have not done so.
  19. "you can pass through it, just not out of it. isn`t that a little bit contradictory?" No, it just means it's a one way ticket. For a large (massive) enough black hole the event horizon is very large, so the gravitational field just outside it is nearly the same as just inside it. With only this small change in field strength there is nothing to pull you apart. It would be perfectly possible to go through the event horizon unscathed and without noticing. Later on, when you got nearer to the singularity, the gravitational field at your feet would be much bigger than that at your head and you'd be in trouble. The process is known coloquially as spaghettification.
  20. I don't know about you but all the nitrogen isotopes in me are stable. The lonest lived radioisotope has a half life of under 10 minutes. I think my tritium, thorium, radium, 90strontium etc, loading will contribute many orders of magnitude more radiation than any radioisotopes of nitrogen.
  21. Perhaps they should get the imperial system right first.
  22. I'd just love to see someone putting sugar into a GC-MS- provided that Ididn't have to clean it afterwards. LCMS maybe, or a lot of messing about with derivatising agents.
  23. The OED defines the ear as the organ of hearing. "Waste from the liver passes straight into the blood stream and out through the kidneys." Gosh! You don't say!. I thought it quantumn tunneled out.
  24. Glider, "I know of only one kind of sensory receptor cell that comes into direct contact with the external environment: the chemoreceptors lining the nasal cavity and on the tongue. All others are internal. Cochleal mechanoreceptorss are in the inner ear, photoreceptors are in the retina and all skin touch receptors are dermal or subdermal." True, but I was talking about organs rather than cells. Ears do stick out. Skin can shed waste products straight into the outside world in a way that, for example, a liver can't. Since earwax etc are not waste products anyway it hardly matters.
  25. I'm not sure I understand. Do you mean that for a field to act on the particle to accelerate it virtual photons have to reach the particle; catching up with the particle means they are red shifted an they have leass energy? If I have understood that bit then please help me ot here because my physics isn't that good. Imagine I have an electron between two metal plates. I put a voltage beween those plates and the electron accelerates towards the positive one. Do the virtual photons that carrry the energy move from the positive plate (in which case they would be blue shifted or the negative one (red shifted) and how do they know which plate to come from- after all, until they get there they don't know if I started with a positron? Do they come from both plates and, if so, do the effects cancel out?
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.