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Groups > rec.arts.sf.written > #489251 > unrolled thread
| Started by | The Starmaker <starmaker@ix.netcom.com> |
|---|---|
| First post | 2018-03-27 23:48 -0700 |
| Last post | 2018-03-30 08:09 +0100 |
| Articles | 2 on this page of 22 — 5 participants |
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Dark Matter? The Starmaker <starmaker@ix.netcom.com> - 2018-03-27 23:48 -0700
Re:Dark Matter? Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-03-28 14:47 +0200
Re: Dark Matter? The Starmaker <starmaker@ix.netcom.com> - 2018-03-28 10:04 -0700
Re: Dark Matter? The Starmaker <starmaker@ix.netcom.com> - 2018-03-28 10:17 -0700
Re: Dark Matter? Siri Cruise <chine.bleu@yahoo.com> - 2018-03-28 13:23 -0700
Re: Dark Matter? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-03-29 03:04 +0200
Re: Dark Matter? Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-03-29 07:04 +0200
Re: Dark Matter? The Starmaker <starmaker@ix.netcom.com> - 2018-03-29 20:38 -0700
Re: Dark Matter? Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-03-30 08:49 +0200
Re: Dark Matter? The Starmaker <starmaker@ix.netcom.com> - 2018-03-30 10:50 -0700
Re: Dark Matter? The Starmaker <starmaker@ix.netcom.com> - 2018-03-28 15:12 -0700
Re: Dark Matter? The Starmaker <starmaker@ix.netcom.com> - 2018-03-28 15:53 -0700
Re: Dark Matter? Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-03-29 06:47 +0200
Re: Dark Matter? The Starmaker <starmaker@ix.netcom.com> - 2018-03-28 23:35 -0700
Re: Dark Matter? Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-03-29 08:51 +0200
Re: Dark Matter? The Starmaker <starmaker@ix.netcom.com> - 2018-03-29 18:09 -0700
Re: Dark Matter? Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-03-30 03:43 +0200
Re: Dark Matter? The Starmaker <starmaker@ix.netcom.com> - 2018-03-29 20:42 -0700
Re: Dark Matter? Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-03-30 08:53 +0200
Re: Dark Matter? The Starmaker <starmaker@ix.netcom.com> - 2018-03-30 10:30 -0700
Re: Dark Matter? Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-03-29 06:46 +0200
Re: Dark Matter? Keith Stein <keithstein111@gmail.com> - 2018-03-30 08:09 +0100
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| From | Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> |
|---|---|
| Date | 2018-03-29 06:46 +0200 |
| Message-ID | <p9hr35$6eh$1@dont-email.me> |
| In reply to | #489341 |
The Starmaker <starmaker@ix.netcom.com> Wrote in message: > Libor Striz wrote: >> >> The Starmaker <starmaker@ix.netcom.com> Wrote in message: >> > What color is...Dark Matter? >> > >> > >> > According to my observation... >> > >> > it is darker than Blue. >> > >> Dark matter is misname. >> Hidden matter is more exact. >> >> What is dark absorbs light, like a dark object. >> Dark matter does not absorb light. >> Neither reflects light. >> Neither refracts light. >> Neither disperges light. >> It does not interact with light, but via gravity. >> >> What does not interact with light is not dark. >> >> But, it can be a transparent foreground on a dark background. > > > You mean like what a fish sees... > If you mean dark matter is white with white background and black with black background, then yes. By other words, DM is like a PNG file with 100% transparency. -- Libor Striz aka Poutnik ( a pilgrim/wanderer/wayfarer) ----Android NewsGroup Reader---- http://usenet.sinaapp.com/
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| From | Keith Stein <keithstein111@gmail.com> |
|---|---|
| Date | 2018-03-30 08:09 +0100 |
| Message-ID | <IolvC.225495$Ml.198014@fx24.am4> |
| In reply to | #489251 |
On 28/03/2018 07:48, The Starmaker wrote:
> What color is...Dark Matter?
> dark matter color is darker than blue.
> But, but...if you ask the Internet...you will get the wrong answer:
> "Dark matter has no color, because it's transparent, so it is invisible."
> If you ask your science teacher...you will get the wrong answer:
> "Dark matter has no color,
FLAT ORBITAL VELOCITY CURVES OF SPIRAL GALAXIES
I suspect there could be a simple relationship of the form:
( constant orbital speed )^2 = K * mass of galaxy
I arrive at this by assuming that for spiral galaxies there is, in
addition to the usual Newtonian inverse square gravitation, an
additional inverse LINEAR relationship.
At normal distances the LINEAR TERM is clearly very small and can be
ignored, but obviously at very large distances the linear term will
dominate, and at sufficiently large distances the inverse square term
can be ignored.
At large distance from the galactic center (R) we may therefore write:
Centripetal Force = m * v^2 / R = K * M * m / R
Which gives us: v^2 = K * M
Note v is independent of R, so this would nicely explain the
FLAT ORBITAL VELOCITY CURVES OF SPIRAL GALAXIES eh!
> Where do you guys learn physics from? science fiction teachers??
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