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John Cuthber

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Everything posted by John Cuthber

  1. The difference between pharmacology and murder is intent. Civilised societies do not judge only on the outcome I understand that there is consent. I also understand that the law doesn't always recognise consent. "In the UK, in Operation Spanner, three men who consensually agreed to engage in consensual sadomasochism, were convicted of assault occasioning actual bodily harm. The resulting House of Lords case (R v Brown, colloquially known as "the Spanner case") ruled that consent was not a valid legal defence for wounding and actual bodily harm in the UK, except as a foreseeable incident of a lawful activity in which the person injured was participating, e.g. surgery. " Currently "Boxing"- by the Queensbury rules" is lawful and knuckle fighting is not. Had you checked on that before telling me I didn't understand? That sort of decision making is, essentially, what I do for a living. You have made a common error. You have only got half way to the well established idea of a "risk/ benefit" analysis. By your "logic" we should ban cars- since they kill more people than rugby. The "benefit " of boxing is, largely, the entertainment of the people. If the crowds were big enough, would you think it was "right" to feed Christians to the lions?
  2. They don't hit themselves; they hit each other. That's the point. It's also the opinion of the society which expects teachers and other adults to stop kids fighting in the playground. You seem not to understand that it's other peoples health they actively seek to damage. But the answer is obvious. your point is a strawman. It's not my decision, but society's.
  3. Unlike any other sport, where harm to the opponent is incidental to the process, the primary goal of boxing is to brain damage your opponent. The euphemism they use is "knock out". So, if those involved want to make the "sport" safer, they have to reverse the rule; a KO should lose the match. Fundamentally, this is grown men (in the ring or the audience) doing something they should have grown out of while at school.
  4. Let's face it. I'm not shy. If I had any meaningful suggestions for an explanation, I'd put them forward. I will make one point. It's not a difficult experiment to set up. Anyone with any "theory" about what went wrong could repeat the experiment. I found this on the web. Are their data concordant with yours? https://pennyroyalresearch.files.wordpress.com/2017/01/the-effect-of-temperature-and-concentration-on-galvanic-cells.pdf
  5. A few years ago, Enthalpy made that simple, easy to understand observation. And yet we still have people asking things like this.
  6. Ideally, the input resistance of a voltmeter is infinite. 10^13 ohms will be close enough. Putting a resistor in parallel will slightly reduce the accuracy of the measurement.
  7. Is this going to make a difference in the world? If so, what?
  8. Or if there was DNA, but degraded and/ or contaminated.
  9. No, you do not. As I said... So, get out and do the experiment.
  10. It's not a matter of what I believe, is it? After all, it's not as if I post under my real name here, so I recognise that a name isn't important. It's a matter of your assertions not making sense. Either you have experimental subjects or you don't. You don't need the media to do the experiment I proposed.
  11. Either you are wrong, or you are wrong. Either you can send these messages to people, and they tell you what they "heard" or they don't. If they don't then you are wrong to say ". i can send random messages to a person and the person heard it, that includes words numbers and symbols.". On the other hand, if you can send those messages then you are wrong to say that you can't find experimental volunteers because the people who tell you that they "hear" your messages are experimental volunteers. Chose a story , and stick with it, or just leave. If that's true, and yet you are saying things that contradict eachother then you must be lying. However, here's a simple experiment for you to try. Go for a walk through town of go + hang round at the bus station or some such- anywhere that you can find plenty of people. Wear something slightly unusual- a red coat or something. Telepathically send a request to anyone who passes you saying " Ask the guy in the red coat what the time is". Now I accept that some people who "get the message" will ignore it but it's hard to imagine they all will.. Try this experiment for a few hours over a few days and come back to us to let us know if anyone actually asked you the time. Once you have enough data - say a dozen people asking you the time,- repeat the experiment, but this time send some other message and see how many people ask the time anyway,- just to establish the background rate. If you are really telling the truth, you should be able to confirm it in an afternoon.
  12. Which variation of stupid are you being? The evolution of dogs and people started at the same time since (like all mammals) we have a common ancestor. That invalidates your claim that our pet dogs have had longer to evolve than we have. And you said "pet dogs" and they only became pet dogs after we started petting them. That invalidates your claim that our pet dogs have had longer to evolve than we have.
  13. Are there any homeless people where you live? How about students or bored housewives? This idea that you can't find experimental subjects is daft.
  14. Then why are you using the internet?
  15. We have been around for longer than pet dogs.It kind of follows from the definition of "pet". And "Where the domestication of the dog took place remains debated, however literature reviews of the evidence find that the most plausible proposals are Central Asia, East Asia, and Western Europe. " From https://en.wikipedia.org/wiki/Origin_of_the_domestic_dog So, that's plainly after we left Africa.
  16. "for copper electrorefining is 0.0 V. In practice, overvoltages at the anode and cathode and the resistance in the electrolyte and electrical system result in the need for an applied voltage of approximately 0.3 V. " From http://doccopper.tripod.com/copper/er.html Or 0.15 to 0.3V from http://www.ct.ufrgs.br/ntcm/graduacao/ENG06631/5-b_copper.pdf I recognise those are for copper, but silver's not that different. So the energy use is roughly a tenth of what you said. 0.02MJ / mole Now a MW Hr of (domestic) electricity is 3.6GJ and costs- as you say about 150 Euros So that's 4 cents per MJ So the electricity cost is 0.02 MJ/ miol times 4 cents per mol which is 0.08c per mole Roughly 10 moles to the Kg so the electrical cost is about 1 cent per kilo or about 10 Euros per tonne. Today's price is about 500 euros per kg or roughly 500,000 per tonne. Essentially, unless you can recover 90% or so of the energy that you put into evaporating the metal, it's not worth it Electro refining at about 0.02 to 0.05 MJ / mole is going to be cheaper than boiling at 0.3 MJ/ mole, even when you allow for gas being roughly a third the price of electricity (on a J per $ basis).. Running it in a stream of argon means you also spend energy heating argon.
  17. Well, it's certainly sensible for any stable element. Whether it's worth it for a steak is debatable- there might be some stupidly rich tourists in space.
  18. Unless you expect it. Castles were built with staircases with an "odd" stepp in them to trip enemies who were climbing the stairs. I learned about this interesting fact in a talk about the safety of modern stairs where , as they pointed out, badly made stairs are still killing the unwary. Here's a trivia question for you ( the answer is at the end of the post) Roughly how many people are killed by falling on stairs each day in the UK? Interesting fact for the day. If you have a staircase where the steps are uneven you can always make it even by adding planks (of various thicknesses) to the steps. This is an important result because adding to the treads is easy but taking stuff away is hard. It's also (I think) always possible to make all the steps the same "length" as well. So there really is no excuse for badly built stairways. (About two, btw- did you guess right?) Our brains are pretty good, but we often rely on reflexes which don't use the brain. I'm not sure which category this phenomenon falls into . I'd be interested in finding out. I'd be even more interested in knowing how they found out.
  19. Anything we can do an asteroid can do better; an asteroid can do anything better than us. Seriously, the gravity well of taking something away from Earth is so expensive in energy that it will make sense to get any element from somewhere smaller more or less regardless of how common it is.
  20. True. (And, personally, I think he should have gone with turquoise or peach as the 7th. Who seriously thinks indigo isn't blue?) The important point is that 1 exceeds zero. So is just plain wrong regardless of Newton's numerology
  21. The word Clinical has a similarly odd origin. It means bedside. It's related to words like recline and incline. It also ties in with geological "beds" as in syncline.
  22. Newton would disagree, having put indigo and violet in the space between blue and UV. There's undoubtedly some light produced below 400nm, but not very much. And, for what it's worth, 400 nm is visible. The exact "start" of the UV is rather poorly defined. But your implication is that the designers chose a phosphor that only works "by accident". Not only that, but there is direct evidence that the phosphors absorb visible (blueish) light. Have a look at a white LED when it's not running. It looks yellow. Do you have some extraordinary evidence?
  23. The best street lighting is probably the one that gets the local politician re-elected at the lowest cost.
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