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studiot

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Everything posted by studiot

  1. I am persuaded that Einstein's inertial mass was 90kg
  2. What do you call someone who cannot tell the difference between singular and plural ?
  3. Thanks for warning us. +1 Punters need to band together.
  4. Nonsense, it is the augean stables that need cleaning of trolls.
  5. This has got to be your most brazen troll yet. What, pray, is an alpha particle?
  6. Careful what you assume. Some of us (myself included) have published research papers to our names.
  7. How ? Did you read my recent comments or am I wasting nmy time on you?
  8. Less of the 'we' please. I agree it is often forgotten or ignored but I am always promoting careful examination of the conditions under which any theory or model holds good.
  9. Thanks. I had considered the Wiki definitive statement a while back but had basically given up on the OP. I did hold back, jut now on a really waspish (but very funny) comment in the Huygens thread. I try to tell myself that maybe the OP is one of these people who has trouble communicating and deserves special consideration.
  10. Well spotted. I particularly like your alternative. +1
  11. http://www.bbc.co.uk/news/uk-england-bristol-40740422 Pictures of the biggest bang actually we have observed in the universe plus discussion.
  12. This is a misapplication of the Law of Conservation of Energy. COE (the First Law) applies to changes in state function energies, due to inputs or outputs to a system summed over some parameter of the process eg time, at the end of a process. It cannot be applied directly during a process.
  13. Yes by the use of a virtual work analysis, Faraday's, Lenz's and Neuman's laws can be deduced from conservation of energy and a virtual work perturbation.
  14. A very good and deep point worth a thread in its own right. +1 By its very definition and nature the end point of an evolutionary step is not equal to the starting point. I don't agree with the rest of the post, however.
  15. Yes Yes Yes Yes Yes Yes +1 PS I resisted the temptation to reply six times
  16. Twp disputes is two threads. Plus one more for your dispute with swansont. I look forward with interest to spectating.
  17. I seem to be the only one who reads books these days so here is something I didn't see on facebook or twitter. It is about cleaning keyboards, but I have also applied it to mobile phones and computer boards more generally, but take batteries out first.
  18. Don't know if writing here has any different effect from writing in the other box I was offered so this is a test ta!

    1. DrP

      DrP

      So if I write in this box it should appear on both of your profile pages??  Let's see.

    2. imatfaal

      imatfaal

      It appears on my profile page

    3. imatfaal

      imatfaal

      And it appears on Studiot's profile page

  19. Thanks for the replies, even if I don't fully understand them. Are they anything to do with Science? Can I tag the single malt in pictures now?
  20. I note I can now write a public message to another member. What does that look like and where does it appear please? Does this mean there are no longer any private messages? What about the little envelope icon. What sort of message is this?
  21. Yes it is irrelevant to the force in the bolts, but not to the changes of length and strain and hence distance measurements. I assume that was why you (rightly) asked the question how were the distance measurements made. The OP states "I want to calculate the 'deflection' at this point on the surface". But the deflection from what? A surface plate the whole assembly is standing on? The contact surface between the sole plate and the block? I agree that between any two sections or marks on the unstressed block, the compression will only depend upon the applied force, not the method by which it is applied. However something must change position in the system, so if measurement is made from an external reference, this must be taken into account. A question for varatharajan. It is possible to have stress without strain or strain without stress. Can you say how?
  22. 1) There are two bolts so F = 2 * 50kN 2) Your section BB is shown looking up into the thicker part of the block including the overhang. You should be using the area not including the overhang. 3) The tension extension of the bolts and the compression shortening of the block are of the opposite sign. How this affects the measured distance between the sole plate and the overhang depends upon the method of measurement and the foundation conditions of the sole plate.
  23. If you prefer to use a formula to calculate the bolt force, the standard one is T = c*d*F Where T is the required tightening torque d is the bolt diameter F is the initial bolt force c is a constant, default value 0.2 Use of the default value leads to the 50 kN mentioned by Bender. Using this, and deducting the bolt hole area from your stated area I make the calculated shortening 0.005 mm. Good site linked BTW Bender. +1
  24. Do I really need to know what swansont is doing every minute of the day? Do I really need to know when some ratbag spammer joins the forum? Do I really need a list of the last 15 replies to a very active thread? I certainly don't want to know any of this. But what was needed and readily availble now takes me several screens to find and I still can't be sure that I have checked the threads I have an interest in.
  25. studiot

    current

    My mistake. Thank you.
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