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John Cuthber

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Everything posted by John Cuthber

  1. What on earth did you study?
  2. If you are seeking to mix gases, I have good news for you; the laws of thermodynamics are on your side. If you arrange the gas feeds to the tube to be fast and tangential so that they "swirl" down the pipe, they will mix very rapidly.
  3. Where does one get the BaFeO5 from? It's hard enough to get https://en.wikipedia.org/wiki/Barium_ferrate And someone is suggesting taking another couple of electrons of the iron. I don't doubt the existence of Fe 8+ ions in the sun, but I don't imagine they have any chemistry. Much as I like reading old textbooks, I don't always accept their claims at face value. The difficulty with doing analysis to determine the oxidation state of the iron would be great today and I simply don't think they would have been able to guarantee accuracy back then. (This might be one of the examples of Mossbauer spectroscopy actually being useful.) Certainly the WIKI page doesn't say anything about Fe(VIII) https://en.wikipedia.org/wiki/High-valent_iron They were. I have a copy from 1962. It mentions the carbonyl complexes as examples.
  4. No. The shareholders own them. And the rest of your post isn't much better.
  5. It's late on a Friday... Reevaluate Gin Mix.
  6. The plan is to give vast sums of money to an industry that is already making a huge profit from the turmoil of war. Then to get the taxpayers to pay for that handout. The rationale behind this is that the government is paid by the energy companies.
  7. Does that mean it's a video on polyester on polyester?
  8. Most natural fibres, derived from plants, are essentially made of cellulose https://en.wikipedia.org/wiki/Cellulose Silk is largely a protein called fibroin https://en.wikipedia.org/wiki/Fibroin And wool is mainly keratin. https://en.wikipedia.org/wiki/Keratin Some artificial fibres are made from reconstituted cellulose. Nylon could be any of a number of polyamides https://en.wikipedia.org/wiki/Polyamide And polyester is an ester of ethylene glycol with terephthalic acid. https://en.wikipedia.org/wiki/Polyethylene_terephthalate There are some others. All of those materials are intrinsically white. The colours are due to dyes mixed into the fibres or added onto the surfaces. For example, for cotton, those two or three processes are Harvesting ginning carding spinning mercerising dyeing weaving, cutting sewing. I may have missed two or three.
  9. It's a great idea. Perhaps we can implement it. But given that the last Prime minister lied to the queen and got away with it... I'm not royalist, but I think that any alternative head of state would be roughly as expensive, and less good at attracting tourists.
  10. Stunt plane wings are, I'm told, "thick" because they have to be strong, and more or less symmetrical. They are pretty nearly "fins". If you take a flat fin and streamline it a bit you get the sort of wing you see on aerobatic planes https://www.amaflightschool.org/getstarted/how-do-i-know-difference-between-basic-trainers-aerobatic-trainers And if you then tweak it to reduce the drag caused by turbulence behind/ above it, you get a conventional aerofoil. Nobody cares about the fuel efficiency of stunt planes, but they have wings that look like dolphin fins in cross section.
  11. That the cross section of the wing isn't what matters. The angle of attack is largely responsible for lift.
  12. Well... that is her title. It's like referring to Biden as "president". What do you expect them to call her "Granny Windsor"?
  13. An interesting question is how well should a flat "fin" work in air. A rocket with a fin (on each side) will follow a curve because the fin provides as "sideway" force. if you turn that on its side the sideways force becomes lift.
  14. Really? I'm sure Peter Sutcliffe would have been grateful for your support https://en.wikipedia.org/wiki/Peter_Sutcliffe He went to jail for doing what he believed was the right thing.
  15. Why? Why can't it arrive a bit later? The air can sort itself out later by swirling about. It's not like having two queues of people going through customs barriers where the couples need to meet up afterwards. The "it goes faster over the curved surface so.... Bernoulli... it generates lift" explanation is clearly wrong. You can fly stunt planes upside down indefinitely. At the very least, you need to consider this as well. https://en.wikipedia.org/wiki/Coandă_effect
  16. Pandemic is not a "level" it's a distribution. But, assuming you continue with your "unorthodox" definition, when the number gets above 100 again, will you accept that you are wrong? Incidentally there were actually 3 elements to his "justification". One was that covid is over the second was that we have finished with brexit and the third is that the war in Ukraine is no longer an issue. There's a pattern here and it's that JRM is either an idiot or a liar (or both).
  17. Covid deaths re oscillating between about 30 and about 300 There may have only been 30 today, But there were 90 on the day that article was published. Since he said "it was behind us" the number has risen as far as 300. Nobody said that anyone was calling road deaths a pandemic. So your point there is a straw man. There is no mechanism for this pandemic to "end", any more than we can eliminate the common cold. So, his claim that it's over is clearly wrong. The question of whether he's a liar or an idiot remains unresolved. Since his claim that it's behind us is factually wrong, he should not be using it as the basis for policy, should he? Because we have a stupid electoral system. At least the Americans have the sense to have just two significant parties. Our "First past the post" system almost ensures a dictatorship by a minority. More people voted against Johnson than for him, but his party won a huge majority.
  18. Glad you are making progress. Do you now understand that the union doesn't negotiate with the government? (The government refuses to negotiate because they have a mandate from a minority of the voters.) Lucky them. (I doubt it's true, https://www.cbc.ca/news/politics/government-fired-misconduct-incompetence-1.4746602 but that's another matter). Meanwhile, here with the topic in the UK. https://www.politics.co.uk/news/2022/05/13/slashing-91000-civil-service-jobs-perfectly-reasonable-says-rees-mogg/ His "justification" is that "With the pandemic now behind us..." He's lying; it's not behind us, it is killing about 100 people a day. For comparison, only about half that many get killed in road accidents and nobody is saying that "road accidents are behind us".
  19. I didn't see the post that said "Tell us you don't know what performance related pay means" without saying "I don't know what performance related pay means". Not understanding the difference between different jobs and different levels of performance within a job is fairly dumb. But your chosen comparison is even dumber. It's hypothetically possible to have a really great brain surgeon who is a wheelchair user and would struggle as a binman.
  20. Maybe... Good question. Most people are probably thinking in terms of politician's competence. I gather a recent poll showed that more people in the UK believe that the earth is flat than believe that Truss will be a good PM. But the real problem that employers- including politicians- have with competence based pay is that it takes control of the playbill out of their hands. If there's a clear set of goals to meet, people will meet them. To take a stupid example, if one of the competencies you get paid for is knowing how to format a business letter with the address and date etc in the right places and yours sincerely or yours faithfully at the bottom as appropriate then after a very short while, everyone makes sure they know how to do it- even if they have to make themselves an "aide memoire" of some sort. So, after a short while, all the letters sent out are in the right format and this should make the employer happy. And, of course, the same goes for all the other "tests". It's important to distinguish between "competency" and "performance". There is a difference between "I know how to send a reply letter and I know the target is to do so within 3 days of receipt" which is competence and "I send out replies within 3 days" which is performance. I'm responsible for the first; it's my job to learn. But I may not be responsible for the second. If the guy who should buy stamps fails, then my performance suffer, through no fault of mine. (please don't waste time saying it should be my job to buy stamps; these are "mickey mouse" examples.) That's why the Unions like competence based pay. It puts the responsibility for what I get paid into my hands- not my boss' or colleagues'. And, of course, it's why bad mangers hate competence based pay. After a short while, everyone is doing a great job. And they expect to get paid full rates for doing it. So the managers can no longer exploit them.
  21. OK, as you say the buyer has more power. The seller has less power. And, in the employment market- where Unions get involved- and thus the only market which is relevant to the thread- the seller is the employee. I sell my time + skills to an employer. But they set the price. If they don't like the price I charge, they won't buy. So, as I said, the situation is one of unequal power. The employer is "in charge" in every sense. And sometimes, the only way to stop them abusing that power is concerted action like a strike..
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