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![]() Cross posted to sci.astro by the suggestion of Moosh. Michael Davis wrote: Dan Bloomquist wrote: More unattributed snippage noted. Michael Davis wrote: Dan Bloomquist wrote: Michael Davis wrote: Dan Bloomquist wrote: Michael Davis wrote: Your observations are irrelevant. They don't support your contention that there is a fixed frame of reference that extends to the stars, so no contradictory observations need to be introduced. The onus of proof is upon you Mach supporters. Not the rest of us. Not my observation. Search 'sidereal period'. And a note, I am not the person bringing Mach up. My interest is in the observations, not causal explanations. The definition is wrong because it assumes fixed background stars. You can pretend they are fixed if that helps you visualize how things work, but don't forget that you are just pretending. there's nothing magical about the "sidereal period." Basically the sidereal year is different from the solar year because the Earth is both orbiting the Sun as well as rotating on its axis. So in a year the Sun crosses the sky one more time than the stars do. BFD. So, if sidereal time is meaningless, why use it as a period in orbital mechanics? Where did I say it was meaningless? I clearly explained the meaning of "sidereal." It's not my fault if the real definition of the term doesn't live up to your kooky expectations. I'm sorry, I didn't see you define it. On the other hand: http://scienceworld.wolfram.com/astr...ealPeriod.html Gee, another obviously wrong definition. Here's a free clue. Just because you read something on a web site doesn't make it true. http://www-astronomy.mps.ohio-state....a00_part4.html * Sidereal period: * The period of a planet's revolution around the sun relative to the fixed stars: its true period around sun Astronomy 161 SOLAR SYSTEM ASTRONOMY Professor Jay A. Frogel Now why should I doubt a professor? A lot of edu pages say the same thing. The star field is used because orbital mechanics doesn't work in any other frame. Because L= mrv in this frame, it shows that the angular momentum of the planets coincide with the star field. I suspect I would have a more constructive conversation with a stone than with you. You just remain in denial about the stars not being fixed. Enjoy your 16th century mindset. If snippage is valid for you, then it is valid for me too. --- Flushed idiocy we have been over a dozen times already --- One of the definitions of the term "kook" is when someone says or does the same idiotic thing over and over again as if the results will be any different than all the other times before. I think you have very adequately defined yourself as a kook in this thread. One more time, here are the observations. All you have to do is address them. I haven't been able to get you to the point where L= mrv is addressed. Don't simply claim it isn't so without addressing the observations: So, if sidereal time is meaningless, why use it as a period in orbital mechanics? Does the math work in any other frame? Why isn't the Foucault Pendulum a valid observation? http://www.griffithobs.org/exhibits/.../pendulum.html This is an example of the Coriolis effect, which is Newton's first law. If matter could exist with angular momentum in a different frame of reference than other matter, why have we have never observed a violation of the conservation of angular momentum? Do we observe that all the planets orbit relative to the same frame of reference? When you compare this frame of reference to the star field, does it coincide? Is the Sagnac effect also a valid observation of this frame? -- The Evil Michael Davis(tm) http://www.mdpub.com/scopeworks/ http://skepticult.org Member #264-70198-536 Member #33 1/3 of The "I Have Been Killfiled By Tommy" Club "There's a sucker born every minute" - David Hannum (often erroneously attributed to P. T. Barnum) Please don't remove sci.astro I'm looking for constructive criticism for a page on rotation: http://lakeweb.net/rotation.html It is only initial thoughts, not outlined nor formatted. Thanks, Dan. -- http://lakeweb.net http://ReserveAnalyst.com dbAtLakewebDotCom |
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