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rktpro

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Posts posted by rktpro

  1. Friction is kinetic when the book slides and static when it is at rest. The railings might not be having a uniform friction coefficient. It has to do with forces that arise due to molecular interactions. If you make the surface perfectly clean, not a single speck of dust, friction coefficient becomes very large as molecular associations become stronger.

  2. (emphasizing mine)

     

    Isn't that enough to put Snell's law at work?

    I mean, the slowing down of the bullet.

    The origin of Snell's Law is Fermat's Principal of least time. For a mechanical object like bullet, I think swansont correctly mentions torque to play a role.
  3. One type of fool is the one who say his words, looking at you in the eye, with high confidence and harsh tone and adding harsh phrases. If you are a humble guy, chances of winning the argument against aggression are less. You have to be like them, if it is not too official or public. Also, they would keep establishing their claims on some fallacy, and if you got it, keep repeating to them that they were wrong.

  4. Oh dear, rktpro, yes the equation is wrong. That blooming velocity, c keeps turning up in the wrong place.

     

    Unfortunately I don't speak LaTex so I write all my equations out in MathType and then paste them into the text.

    This time I wrote it in Word and pasted them in there and finally pasted it again into SF.

     

    Mea culpa.

     

    The correct equation is

     

    [math]Y = B\sin \omega \left( {\frac{x}{c}} \right)\cos \omega t[/math]

     

     

    The original two equations should have x/c as well.

     

    This does not alter the points made, however since the point is that the original waves contain additions (or subtractions) within the angle, of a time and distance function, reduced to common units.

    The composite of the two waves into a single standing wave results in the separation of time and distance into the product of a time function and a distance function.

    I mentioned a question regarding disturbance travelling instantaneously. Help needed.

    I feel that beats can be detected initially.

  5.  

    Studiot-Sir, I am having a difficult understanding the point that a disturbance must instantaneously travel to point B from point A. If it takes time to reach from one point to another, only if it strictly does, then it might be possible to measure beats.

    Isn't the wave equation used dimensionally incorrevt? That, as Enthalpy points, might have created an error in the superimposed wave.

  6. Photons have zero rest mass, so they can't be made static in strict sense. To behave like a solid, they would have to oscillate about their fixed point. If we can make such scenerio possible, I wonder would they make same lattice pattern and voids like solids do. How about a photon of different wavelength occupying the voids of the lattice. However, that is secondary. The first thing is to know if solid containing photons is possible.

  7. When you say a battle is initiated against modern mathematics for the rights of Indian giants, you are dis-respecting them. I am very much sure that Bhaskar and others would not mind it when they were wrong. Now, there is no Indian or Russion mathematics, it is universal. Also, if you can, please post the updated result/proof here. Your idea of claiming royality(as is pointed out in the site) will not be hampered.

  8. Kekule has his famous story of how he dreamt of a curling snake biting its tail and something like that. But, like Kekule himself said, dreams are to be passed through filters of logic. Basically, Kekule had the ideas about benzene's chemical behaviour. I think a compounds chemical reaction with known reagents help guessing the structure. Parameters like double bond equivalence are very useful, of course you must know the no of each atom and the element.

  9. Once there's enough water around to hydrate any sulphate ions you have a material that's mainly water and isn't really hygroscopic any more. So hydration energy can't be much of a factor.

     

    The reaction of water with sulphuric acid to give H3O+ and HSO4- is very energetically favoured so any water that gets into the acid is effectively trapped as involatile ions.

    So, 'enough water' due to hydration would be so less that hydration can be neglected as the main cause of hygroscopic nature? Though, sulphate can move in the material and create residual force for more h-bonding at new sites. Nevertheless, it is still H-bondind in the case when H3O+ exists.
  10. Lingual theory of everything would only help ancient civilization which has no means to record their observation, pass it to other generation, and above all-are very primitive in knowledge. You can't teach a student where to apply force on a sphere to make the resultant friction in motion zeroz. That is just one thing, a lingual theory, containing no math, and of course no scientific ideas, is of little use, IMHO.

  11. That change is not possible. Inner L shell is filled and can't accomodate more than 8 electrons. L shell has 2s and 2p orbitals which can accomodate 2 and 6 electrons respectively in total. Electronic configuration has varied because we have learnt new ideas and unlearnt some. Nature is as it was.

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