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About quiet

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  • Birthday January 31

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    Friendship, Physics, History of the Physics, Music
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    highschool teacher (professor)
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    Classical Electrodynamics
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    The sun, the walk and the bicycle I like as much as reading a good book.
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    highschool teacher

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  1. By the state that now it is, I think the best place for this thread is trash can ...
  2. https://en.m.wikipedia.org/wiki/Exergy
  3. Thanks swansont pot the post. Also you have exposed reasonable objections, which deserve to be visible at the conclusion of the thread. --------- --------- --------- Dear strange, you know that I dislike the fray. It is very easy to write citation needed. The hard part is to retrieve the titles of the publications inside a repository of old papers, search for those titles on the internet, find the exact paragraph within the extension of the publication and bring it here. They are many hours of work to serve on a tray plus gunpowder, which will be used to prolong the war.
  4. Thank you strange for your post. The way in which you have criticized each concept has been precise and, for that reason, I have been able to follow your thought. You have exposed reasonable objections, which are a nice summary of what has been discussed. I think it's a good idea to leave your post as a thread closure.
  5. What you say is true. The word alien is not the best way to express the concept. I only try to remark that in newtonian physics, only for convenience, was used the setup corresponding to equality of the values of both terms. This, like you say, works perfectly in applications. When the point under discussion is the structure of the foundations of the physics, the convenience have nothing to do. The main issue is the recognition of what is postulated, and what is choosed conventionally. Like I have pointed out in a previous post, you can measure the action and the angular mentum,
  6. Hi, studiot. Since the gravitational equation and the second law are applied together, the military can, unfortunately, accurately calculate ballistic missile launches. And long before the cannon shots. In those cases the vertical component of the ballistic movement works like a vertical shot, which reaches its apogee and initiates the free fall. In order not to result in verbal arguments I have put the same development that the texts present to teach that the equality of both types of masses is conventional. Einstein himself emphasizes that in the physics of Newton nothing does impo
  7. Let me go step by step. I have read all the posts, but first I analyze the main point of all this, to submit it to your criticism. --------- - Free fall. [math][/math] [math]m_{g_1} \ \rightarrow[/math] gravitational mass of the planet [math]m_{g_2} \ \rightarrow[/math] gravitational mass of the falling object With this symbols, we write the force as: [math]F = G \ \dfrac{m_{g_1} \ m_{g_2}}{r^2} \ \ \ \ \ \ \ \ \ (A)[/math] The falling object is accelerating, and we write Newton's second law: [math]F = m_{i_2} \ a \ \ \ \ \ \ \ \ \ (B)[/math] [
  8. Hello swansont. I liked the argument. And I would like it to stay firm. I'm thinking of a kind of chess between gentlemen. A is your argument and B is mine. I will try to look for a weak point in A and you can, if you decide to play, do the same with B. --------- In the case of the satellite orbit you mentioned, as in all applications of Newton's gravitational equation, G is calibrated precisely so that it is possible to use the same term [math]m[/math], with the same value, in the gravitation and inertia. This is a conventional decision, it is not a physical law. The number of conveti
  9. 1. I say that: The equation (3) is absurde into the physical context. 2. I say that: Absurde comes only from replace [math]m^2[/math] in Newton's equation of gravitatory force. 3. I say that: If we reject the idea of gravity and inertia caused by the same physical property, then, we can not put the same symbol ([math]m[/math]) in force equation and in the second law equation. 4. I say thay: We can't to put the same symbol without suppossing the same cause in gravity an in inertia. 5. I say that: The absurdity of eqution (3) requires reject the idea of the same cause. 6
  10. With many people saying the same thing, I tend to think the same as those people. I apologize for my ramblings. Best regards.
  11. Agree. And more, I have pointed out, in the first post of the thread, that is incorrect. The main question is where come from the incorrection? Have I made a wrong use of algebra? Have I altered Newton's equations? Have I commited an abuse? Respect to an abuse, there is one. Wich? To suppose that the same physical property is responsible for both, inertia and gravitation. This is simply incorrect. And this is the cause for what the same term [math]m[/math] appears in gravity formula and in the second law formula. This double appearing cause the absurde. And this double appearing come fro
  12. In the limit you get Newton's gravitational formula. And that formula is incompatible with the principle of equivalence. Then GR is completely self-contradictory, since it contains a limit incompatible with its basic hypothesis.
  13. Hi, strange. The equation written with LaTex shows the main line of division at the height of the sign equal and slightly longer than the other line, belonging to the numerator. Keeping this in mind, the notation looks unambiguous. --------- The principle of equivalence assumes that physical property itself intervenes in inertia and gravitation. The physics of Newton does not allow to suppose that, because in case of supposing it you arrive at the equation (3), obtained in the initial post of this thread. In Newtonian physics you can not put the same m in the gravitational equation and
  14. Oh, sorry. I had a confusion. The format is fine. Both lines of division are well located and well sized. --------- There is something important that deserves to be elucidated. When the principle of equivalence of Einstein is introduced in the physics of Newton, the result is absurd and self-contradictory. I do not see how to avoid that problem. Are Newton's physics and the principle of equivalence mutually incompatible? This question needs a well-founded answer. In case of being mutually incompatible, another question appears. Does Special Relativity remain valid if
  15. There is no mathematical error in this equation. If you smplify respect to F remains F at the first power. Then you clear F and obtain the equation (3). Still doubts? Make a dimensional analisys and verfy that units are coherent.
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