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Groups > sci.physics.relativity > #403453
| From | Sylvia Else <sylvia@not.at.this.address> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: Calculating G |
| Date | 2016-12-30 22:35 +1100 |
| Message-ID | <ecmv3qFgbs1U1@mid.individual.net> (permalink) |
| References | <cceae458-46bc-4085-a9f4-d1f658f8a110@googlegroups.com> <c9d7d848-7c72-46c6-bfc5-a42e06c7e7fe@googlegroups.com> <7fa64703-2169-456c-8055-f61465f5201b@googlegroups.com> <o45fh4$1v6d$1@gioia.aioe.org> |
On 30/12/2016 10:13 PM, Dirk Van de moortel wrote: > Op 30-dec-2016 om 07:22 schreef Peter Riedt: >> On Friday, December 30, 2016 at 11:03:06 AM UTC+8, Gary Harnagel wrote: >>> On Thursday, December 29, 2016 at 6:31:08 PM UTC-7, Peter Riedt wrote: >>>> >>>> Calculating G >>>> >>>> The constant G was anticipated by Newton but first accurately >>>> determined in >>>> the laboratory by Henry Cavendish in 1798. It has the value >>>> G=6.674E-11m3kg−1s−2 (cubic meters per kilogram second squared). >>>> >>>> G can be derived from elements of a star by the formula >>>> G=gstar*rstar^2/Mstar >>>> >>>> gstar rstar Mstar G >>>> Sun 273.97 696,000,000 1.99E+30 6.674E-11 >>>> ACa 200.18 853,992,000 2.19E+30 6.674E-11 >>>> ACb 332.10 602,040,000 1.80E+30 6.674E-11 >>>> AC c 1695.00 98,136,000 2.45E+29 6.674E-11 >>>> >>>> gstar = surface acceleration in m/sec >>>> rstar = radius in m >>>> Mstar = mass in kg >>> >>> SO how was g determined for each of these stars? >>> >>>> G can also be derived from g, radius and mass of the planets by the >>>> formula >>>> G=gpl*rpl^2/mpl >>>> >>>> gpl rpl(m) mpl G >>>> MER 3.71 2,439,000 3.30E+23 6.674E-11 >>>> VEN 8.87 6,051,602 4.87E+24 6.674E-11 >>>> EAR 9.80 6,378,621 5.97E+24 6.674E-11 >>>> MAR 3.71 3,397,360 6.42E+23 6.674E-11 >>>> JUP 24.79 71,499,344 1.90E+27 6.674E-11 >>>> SAT 10.44 60,273,223 5.68E+26 6.674E-11 >>>> URA 8.87 25,556,472 8.68E+25 6.674E-11 >>>> NEP 11.15 24,765,365 1.02E+26 6.674E-11 >>>> PLU 0.62 1,158,753 1.25E+22 6.674E-11 >>>> >>>> gpl = surface acceleration of a planet >>>> rpl = radius of a planet >>>> mpl = mass of a planet >>>> >>>> The calculated G numbers of the Sun, Alpha Centauri A, B and C and nine >>>> planets are identical with the Codata value of G=6.674E-11. > > And you went to visit these planets to measure the gpl-values, right. > >>> >>> That's probably because G was used to determine g :-) >> >> Alpha Centauri A B C have their g values on the Internet in the form >> log g. > > And the Internet went there to measure them, right. > > Dirk Vdm Peter persists with these circular analyses despite the issue being raised with him repeatedly. He seems to be yet another poster with some disorder of the mind that muddles their thinking. Sylvia.
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Re: Calculating G Gary Harnagel <hitlong@yahoo.com> - 2016-12-29 19:02 -0800
Re: Calculating G Peter Riedt <riedt1@yahoo.co.uk> - 2016-12-29 22:22 -0800
Re: Calculating G Dirk Van de moortel <dirkvandemoortel@hotspam.not> - 2016-12-30 12:13 +0100
Re: Calculating G Sylvia Else <sylvia@not.at.this.address> - 2016-12-30 22:35 +1100
Re: Calculating G Dirk Van de moortel <dirkvandemoortel@hotspam.not> - 2016-12-30 13:03 +0100
Re: Calculating G mlwozniak@wp.pl - 2016-12-30 04:11 -0800
Re: Calculating G Peter Riedt <riedt1@yahoo.co.uk> - 2016-12-30 14:32 -0800
Re: Calculating G Gary Harnagel <hitlong@yahoo.com> - 2016-12-30 15:17 -0800
Re: Calculating G Peter Riedt <riedt1@yahoo.co.uk> - 2016-12-30 16:51 -0800
Re: Calculating G Sylvia Else <sylvia@not.at.this.address> - 2016-12-31 12:48 +1100
Re: Calculating G Peter Riedt <riedt1@yahoo.co.uk> - 2016-12-30 19:31 -0800
Re: Calculating G Sylvia Else <sylvia@not.at.this.address> - 2016-12-31 14:36 +1100
Re: Calculating G Peter Riedt <riedt1@yahoo.co.uk> - 2016-12-30 23:15 -0800
Re: Calculating G Sylvia Else <sylvia@not.at.this.address> - 2016-12-31 19:29 +1100
Re: Calculating G Peter Riedt <riedt1@yahoo.co.uk> - 2016-12-31 01:18 -0800
Re: Calculating G Sylvia Else <sylvia@not.at.this.address> - 2016-12-31 20:29 +1100
Re: Calculating G Peter Riedt <riedt1@yahoo.co.uk> - 2016-12-31 19:06 -0800
Re: Calculating G Alan Folmsbee <omnilobe@gmail.com> - 2016-12-30 21:33 -0800
Re: Calculating G Gary Harnagel <hitlong@yahoo.com> - 2016-12-30 19:41 -0800
Re: Calculating G Peter Riedt <riedt1@yahoo.co.uk> - 2016-12-30 23:17 -0800
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