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FROM THE HUYGENs THREAD, I OFFERED THIS SET OF EQUATIONS TO SHOW PLANETARY SPIN RATIOS AS A FUNCTION OF VARIABLE E & G, as per below.
The purpose for this equation was to find a relationship between planetary interior heat and the energy levels within which planets orbit. There seems to be a relatively good fit, if not exact, so I solicit any ideas that might expose possible flaws in this reasoning. If anyone has any comments or criticisms, they would be appreciated. Thanks. Ivan/ aka 'Lunatik' --------------------------------------------------------------------------- Quote:
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What about satellites (like Jupiter's and Saturn's)?
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I have given my comments so far in the erratically named 'Potential threat' thread.
Basically, from a mathematical point of view the equation is way too complicated (you don't need PK, for example, and the need for all the constants isn't clear either), and from a logical point of view, you use spin in the equation and you use the result of the equation to calculate spin again. A third criticism, that I haven't posted there: how can your result (spin ratio) for Venus be positive, if one of the elements you are multiplying with is negative? Perhaps you better check the equation and all the calculations, and come back again then...
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(PK/PE) :/: (13.36E-16) x (PK/231.7K) :/: (planetary orbit/365) :/: (planet spin) x (AU)^1/2 = SR became: (PK)^2/PE :/: (13.36E-16/231.7K) :/: (planetary orbit/365) :/: (planet spin) x (AU)^1/2 = SR I'm doing this from memory (notes not with me) but got same results (but not 100% sure I got it right). But this way may be easier to deal with, though results should be the same. Quote:
This is all based on an assumption that interior heat energy somehow drives planetary spin, though we do not understand why it should. So planetary spin is not merely conserved angular momentum, ad infinitum, but actually a function of energy. Can it be so? Maybe... something to look for if variable G and variable E are real. That's what this equation seems to be saying here. One very easy way to disprove this theory is by working out a similar equation with 'non-variable', universal constant Newton's G. If you get spin results that more closely match observed spin, you're in! ![]()
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Or do you hypothesize that it is only the nine planets whose spin is driven by interior heat energy. |
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Now, C * (A/D) = (C*A) / D So you get (A/B) * (D / (C*A)) This is the same as (A*D)/ (B*C*A), and this is again the same as D / (B*C). Hey, no longer is there an A! Can please someone else confirm that I have this basic basic math rules still correct, and if I do, please tell it to Lunatik, because if you get even this wrong, why bother with anything else, and if I get even this wrong, please ignore my criticisms. But this is quite crucial!
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Have you made that formula yourself? Do you understand it? Have you checked it in any way?
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The problem here is that Lunatik's equation is tough to decipher based on what he/she typed. More parenthesis (parenthesi??) should have been used to clarify. This: (PK/PE) :/: (13.36E-16) x (PK/231.7K) :/: (planetary orbit/365) :/: (planet spin) x (AU)^1/2 = SR is better represented as: (PK/PE) * (1/C1) * (PK/C2) * (C3/orbit) * (1/spin) * (AU^0.5) where c1 = 13.36E-16; C2 = 231.7; C3 = 365 As you've pointed out, the use of 3 separate constants is confusing. Also confusing is the lack of units analysis. By my best guess, the units of this "ratio" are (length^0.5 / time). |
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Lunatik, care to write your formulas a bit more clear the next time? The mathematicians use the parentheses for this reason... You use them as well, but not in the right way (putting a constant on its own between brackets is useless, for example). And by using / and :/: indifferently, you only confused me further. Well, assuming that this is the correct explanation, that only leaves the questions: why use three constants, why use spin in a calculation to calculate spin, and why a positive result for Venus?
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SR = (PK * PK * C3 * AU^0.5) / (PE * C1 * C2 * orbit * spin) Lumping some terms together gives: SR = P * C */ spin Where P = planetary terms (excluding spin) Where C = constants That is P = PK*PK*AU^0.5 / PE C = C3 / (C1*C2) So let's look at lunatik's conclusions. Supposedly it is compelling that if you take earth's spin ratio, divide it by another planet's spin ratio, you obtain the planet's rotational period (within ~15% for 75% of planets) So, let's let: SRp = SR for the planet of interest SRe = SR for earth Pe = P (my P, above) for Earth Pp = P for planet of interest spin-e = Earth's spin (ie, rotation rate) spin - p = Planet of interest's spin Then, SRe = Pe * C * / spin-e SRp = Pp * C * / spin-p Again, it is said to be compelling that SRe / SRp is nearly equal to the rotation rate of the planet of interest. Because of this, a link between internal heat and rotation rate is hypothesized. Let's calculate this: SRe / SRp =? spin -p (This means "Does SRp / SRp equal spin-p" substituting for SRe and SRm gives: (Pe * C * / spin-e) / (Pp * C * / spin-p) =? spin-p Since spin-E = 1 (by definition --- we're calculating the spin of the relevent planet in earth days), and since you can cancelling the C's and rearrange the left side, you get: (Pe * spin-p) / (Pp) = spin-p But spin-p is on both sides of the equation!!!! This means that spin has nothing to do with it. So, while I cannot (yet) explain why Pe / Pp would be ~1 for any planet, I can at least state conclusively that the hypothesis that spin is related to internal heat is baseless. (By the way, since all of the terms in Pe and Pp are variations on planet distance, internal temperature, and orbital period, I suspect that there is nothing earth-shattering with regard to why Pe / Pp is ~1 for most planets) edited once to remove a mean-spirited remark on my part, and a second time to correct spelling |
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(PK/PE) :/: (13.36E-16) x (PK/231.7K) :/: (planetary orbit/365) :/: (planet spin) x (AU)^1/2 = SR As pghnative says, these are ratios, so each parenthesis is a separate value, not necessarily algebraic, so that (PK1/231K) is not same as (PK2/231.7K), if that helps. This was why I had those values in parenthesis, because each one represented a value unique to the planet being calculated for spin, as a ratio of Kelvin to Energy, then 'normalized' for Venus near zero spin and Earth's one day spin. That's why it does not lend itself easily to algebraic equivalents, so using actual numbers makes for easier to understand results: Kelvin, E, spin, orbit in days, are in my original post; see Nasa Planetary link for more data. Then put in on a spread sheet and see what you get. Addendum: in rereading pghnative's I can see what he's getting at. Like I said before elsewhere, there are some very smart people here! I'l check it over later and get back. Thanks for simplifying it! I'll run some numbers on it to see how it goes.
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Hmm, looks like you left out 'orbit', which is a variable. This should be: SR = P * C/ spin * orbit Quote:
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So far so good, except for missing 'orbit' and a minor typo, SRp (as SRm). However, SRe / SRp =? spin-p may not be totally correct. Why did you drop out the spin-e? It should read as: SRe/ SRp =? spin-e/ spin-p which gives us: (Pe*C/ spin-e) / (Pp*C/ spin-p) =? spin-e/ spin-p if I follow what you are doing correctly. Of course both sides will have spin in them, since they are ratios of spin. Remember SR is only a number showing the relationship of PK/ PE, for all the planets, Earth included, where it is = 2.32. When you take this 2.32 for Earth and divided it by itself, you get spin of one day. For all the other planets, it is different, which results in approx. their spin (in Earth days). Quote:
(Pe * spin-p) / (Pp) = 1/ spin-p, where the spin-p cancels into: Pe/ Pp = 1. Is this what you were trying to say? The real equation is ..[DELETED] That's what I think this Planetary Spin Ratio equations says. Quote:
Actually, spin-e and spin-b are on both sides of the equation, why wouldn't they be? If I knew why you dropped out 'orbit' and later 'spin-e', I might better understand your conclusion. Still looking at it... It's the variables that runs the results, not the constants which are there only to 'normalize' for Venus 'zero' spin and Earth's one day spin. That's why I fall back upon using actual numbers, because otherwise it is easily confusing. Have not yet had chance to work on your new simplified version, but will check it out futher. Thanks. {Edited for delete of: SRe/ SRp = 1/ spin-p, which is wrong, and spell.]
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That is what you are saying, but I seriously hope that is not true. I know PK is not a constant, and that was not what I said. The way I interpreted your equation, due to the very confusing way you had written it down, gave the result that you could just take out PK as you ended up with PK / PK, which is 1. As pghnative pointed out, that probably was not your intention. But your explanation here is quite ridiculous. I'll sit back for a while and see how you and pghnative make sense of this equation, because we clearly have problems understanding |