On Saturday 28 April 2007, Marko Vojinovic wrote: >> >Orbital mechanics is just fine with >> >that. [...]> >The Earth's orbital velocity is (roughly) 30 km/s, so in 8 minutes it moves >for around 30*8*60 = 14400 kilometers. Now, IIRC, a mile is about two >kilometers, so it amounts to around 7000 miles or so. I guess that was what >you were reffering to. :-) No, in fact I was referring to the same motional wobble that we use to detect extra-solar planets. With the huge diff in the relative masses of the earth compared to the sun, the effect takes some obviously large numbers to calculate and is precisely why we haven't (yet) found any real earth sized planets, at earth orbit distances, around any of our neighboring stars. But its out of phase with the vector of the pull from gravity if pv=C, and that energy transfer is an orbital decay mechanism that would have spiraled the earth into the sun billions of years ago. If gravity's pv is essentially instant, then the orbit works because it changes the attractive vector by the amount it takes to compensate as we move the sun in those 8 minutes it takes the light to get here, converting it into a straight center of mass to center of mass line. Damn, I wish I could find that link, just so you could see if the guy is making any sense. And he is an astrophysics prof someplace, I did check that claim out at the time. [...] >"Do not trust a man with a digital wrist watch." >"Do not trust everything you read on the Web." > >Ancient Chinese sayings... :-) :) >(As a side note, I do wear a wrist watch, but it is both analog and digital, >so I don't know how much I should be trusted... :-) ) Chuckle. I have one of each, a Casio for daily wear, and a Rolex for Saturday nights at the lake. The Casio keeps better time than that $5k Rolex in case anyone is interested, so save your sheckles & wear the Casio. And no, I didn't buy the Rolex, it was the retirement "Gold Watch" I got when I retired (or tried to depending on whether you count the success) from being the CE at WDTV since 1984. >Best, :-) >Marko To you too Marco. This is an interesting conversation, stretching the mind of some, and boring to the others we lost halfway to first base. :) >Marko Vojinovic >Institute of Physics >University of Belgrade > >====================== >e-mail: vmarko@xxxxxxxxxxxx -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) The monitor needs another box of pixels.
