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Groups > sci.physics > #544249 > unrolled thread
| Started by | Carmine Portacio <carpo@trilogybearing.org> |
|---|---|
| First post | 2016-01-10 15:42 +0000 |
| Last post | 2016-01-10 10:51 -0800 |
| Articles | 4 — 3 participants |
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Re: DOES LIGHT MOVE IN A STRAIGHT LINE ?? Carmine Portacio <carpo@trilogybearing.org> - 2016-01-10 15:42 +0000
Re: DOES LIGHT MOVE IN A STRAIGHT LINE ?? The Starmaker <starmaker@ix.netcom.com> - 2016-01-10 10:50 -0800
Re: DOES LIGHT MOVE IN A STRAIGHT LINE ?? "Y.Porat" <y.y.porat@gmail.com> - 2016-01-12 02:23 -0800
Re: DOES LIGHT MOVE IN A STRAIGHT LINE ?? "Y.Porat" <y.y.porat@gmail.com> - 2016-01-10 10:51 -0800
| From | Carmine Portacio <carpo@trilogybearing.org> |
|---|---|
| Date | 2016-01-10 15:42 +0000 |
| Subject | Re: DOES LIGHT MOVE IN A STRAIGHT LINE ?? |
| Message-ID | <n6tu4m$1n89$1@gioia.aioe.org> |
Gregor Scholten wrote: > Kathleen Winder wrote: > >>> Even if NASA did have an interstellar project, GR is not required to >>> go between stars in our galaxy. It would be required if traveling >>> close to a black hole (either a stellar size black hole or the super >>> massive one at the center of our galaxy). But we don't have the >>> technology to go to any such place right now. >> >> Not so fast. To calculate anything at the galactic scale, you need not >> only FR, but also up to 96% Dark Energy and Dark Matter. Without these >> everything is wrong. > > What does FR mean? Did you want to write GR? Then your statement is > wrong, because Dark Energy and Dark Matter are concepts within the > framework of GR: Dark Matter contributes to the energy-momentum tensor > of the cosmic medium in the same way like dusty bright matter, with > energy density rho > 0 and pressure p ~ 0 (i.e. |p| << rho), Dark Energy > contributes with rho > 0 and p < -rho/3 (i.e. with p = -rho, then Dark > Energy is equivalent to a cosmological constant). Therefore you must have them additional to GR, in order to avoid the wrongness of GR, by only applying GR. Kathleen is perfectly right, and you are wrong, insinuating outrageously that Kathleen should be wrong. Yes, F and G are closely located. Surely was a typo, Einstein.
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| From | The Starmaker <starmaker@ix.netcom.com> |
|---|---|
| Date | 2016-01-10 10:50 -0800 |
| Message-ID | <5692A7F5.59F2@ix.netcom.com> |
| In reply to | #544249 |
it goes around venetians blinds.
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| From | "Y.Porat" <y.y.porat@gmail.com> |
|---|---|
| Date | 2016-01-12 02:23 -0800 |
| Message-ID | <08f5e874-b006-4321-89c5-f2f40b21e811@googlegroups.com> |
| In reply to | #544270 |
On Sunday, January 10, 2016 at 8:50:26 PM UTC+2, The Starmaker wrote: > it goes around venetians blinds. =========================== (:-) Y.P ====================
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| From | "Y.Porat" <y.y.porat@gmail.com> |
|---|---|
| Date | 2016-01-10 10:51 -0800 |
| Message-ID | <2f03e5c7-6cff-4441-925b-f6a824dee683@googlegroups.com> |
| In reply to | #544249 |
On Sunday, January 10, 2016 at 5:42:27 PM UTC+2, Carmine Portacio wrote: > Gregor Scholten wrote: > > > Kathleen Winder wrote: > > > >>> Even if NASA did have an interstellar project, GR is not required to > >>> go between stars in our galaxy. It would be required if traveling > >>> close to a black hole (either a stellar size black hole or the super > >>> massive one at the center of our galaxy). But we don't have the > >>> technology to go to any such place right now. > >> > >> Not so fast. To calculate anything at the galactic scale, you need not > >> only FR, but also up to 96% Dark Energy and Dark Matter. Without these > >> everything is wrong. > > > > What does FR mean? Did you want to write GR? Then your statement is > > wrong, because Dark Energy and Dark Matter are concepts within the > > framework of GR: Dark Matter contributes to the energy-momentum tensor > > of the cosmic medium in the same way like dusty bright matter, with > > energy density rho > 0 and pressure p ~ 0 (i.e. |p| << rho), Dark Energy > > contributes with rho > 0 and p < -rho/3 (i.e. with p = -rho, then Dark > > Energy is equivalent to a cosmological constant). > > Therefore you must have them additional to GR, in order to avoid the > wrongness of GR, by only applying GR. Kathleen is perfectly right, and you > are wrong, insinuating outrageously that Kathleen should be wrong. Yes, F > and G are closely located. Surely was a typo, Einstein. ====================== how do you ***detect** 'dark energy?? HOW DO YOU*** MEASURE** 'DARK ENERGY ?? TIA Y.Porat ================================== =======================
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