Search found 17 matches

by headscratcher
Mon Nov 29, 2010 6:08 am
Forum: The Library: Information Desk and Educational Resources
Topic: Dark matter, why?
Replies: 21
Views: 1415

Re: Dark matter, why?

Stellar formation, a crucial function of which is density. We're not discussing stellar formation. You have suggested that luminous matter in parts of the galaxies with higher star densities is somehow more luminous than matter with the same mass would be in less dense areas. That's what I'm saying...
by headscratcher
Mon Nov 29, 2010 3:26 am
Forum: The Library: Information Desk and Educational Resources
Topic: Dark matter, why?
Replies: 21
Views: 1415

Re: Dark matter, why?

Stellar formation, a crucial function of which is density.
by headscratcher
Mon Nov 29, 2010 1:11 am
Forum: The Library: Information Desk and Educational Resources
Topic: Dark matter, why?
Replies: 21
Views: 1415

Re: Dark matter, why?

Chris Peterson wrote:
There is no theory to support the notion that a given amount of mass in the galactic center is more luminous than the same amount of mass further out in the disc.
Not true.
Chris Peterson wrote:

What theory supports your supposition?
Ignoring your characterization, are you asking because you don't know?
by headscratcher
Sun Nov 28, 2010 5:11 am
Forum: The Library: Information Desk and Educational Resources
Topic: Dark matter, why?
Replies: 21
Views: 1415

Re: Dark matter, why?

There is no theory to support the notion that a given amount of mass in the galactic center is more luminous than the same amount of mass further out in the disc. Not true. (And it's disk not disc. A disc is what you stick in the slot disc drive.) The only thing that is producing light is stars, an...
by headscratcher
Sat Nov 27, 2010 5:49 am
Forum: The Library: Information Desk and Educational Resources
Topic: Dark matter, why?
Replies: 21
Views: 1415

Re: Dark matter, why?

I'm going to take one last stab at this. I'm going to call the "Galactic Rotational Problem" a misnomer. It is miss named. It is and should be called a luminance problem. It is, simply put, based on the assumption that mass in the galaxy should be equaly luminant on a ton by ton basis rega...
by headscratcher
Sun Nov 14, 2010 1:33 am
Forum: The Library: Information Desk and Educational Resources
Topic: Dark matter, why?
Replies: 21
Views: 1415

Re: Dark matter, why?

No answer for a "list of a line of stars from near the center of the galaxy to the edge with their orbital periods and distances from center listed".

Didn't think so.

Ignorant, dishonest longswords.
by headscratcher
Sat Nov 13, 2010 5:15 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Dark matter, why?
Replies: 21
Views: 1415

Re: Dark matter, why?

The unseen matter of the galaxy may be "dark matter". Or it may be ineffective instruments or interpretation. Given that the calculation above is never mentioned in the subject discussions I suspect the latter. If you are so comfortable with your own calculations, and sure that everyone e...
by headscratcher
Sat Nov 13, 2010 9:04 am
Forum: The Library: Information Desk and Educational Resources
Topic: Dark matter, why?
Replies: 21
Views: 1415

Re: Dark matter, why?

You've never seen any calculation of a galaxy's rotation according to Newton? You seem unfamiliar with the fundamentals involved in this topic. If you're interested here is the wiki on the subject http://en.wikipedia.org/wiki/Galactic_rotation_curve Note from the wiki "(stars) revolve much fast...
by headscratcher
Sat Nov 13, 2010 5:28 am
Forum: The Library: Information Desk and Educational Resources
Topic: Dark matter, why?
Replies: 21
Views: 1415

Re: Dark matter, why?

Thanks for the answer. I'm not buying it. It doesn't help that you misquoted me and answered your misquote not my question. The misquotes; I asked about dark matter not invisible mass. Of course most of the mass of the galaxy is invisible from Earth. That's no reason to posture it as "dark matt...
by headscratcher
Thu Nov 04, 2010 8:55 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Dark matter, why?
Replies: 21
Views: 1415

Dark matter, why?

So the orbital speed around the galaxy of stars in the outskirts of the galaxy orbit faster than they should. First how could astronomers go so long without noticing? Second why "dark matter" to solve the problem? We don't expect the speed to be a certain amount based on the mass we can se...
by headscratcher
Tue Oct 26, 2010 4:34 pm
Forum: Open Space: Discuss Anything
Topic: Alternatives to vulgarisms?
Replies: 42
Views: 1835

Re: Alternatives to vulgarisms?

rstevenson wrote:This sounds like utter hogwash to me. :mrgreen:

Rob
Good one! I think I'll start using that one. Poppycock too maybe. My great grandma used to say "fiddlesticks".

Any other old fashioned words or phrases? Not overtly vulgar though. Poppycock might be trouble.
by headscratcher
Tue Oct 26, 2010 7:34 am
Forum: Open Space: Discuss Anything
Topic: Alternatives to vulgarisms?
Replies: 42
Views: 1835

Alternatives to vulgarisms?

There are some vugarisms that are useful for conveying concepts/opinions. However some people desire to repress the expression of those concepts by repressing the use of the vulgarism. One vulgarism conveying the concept that what someone is saying is untrue, unimportant, or irrelevant, both the say...
by headscratcher
Wed Oct 13, 2010 4:07 pm
Forum: Open Space: Discuss Anything
Topic: Rescued Miners
Replies: 7
Views: 357

Rescued Miners

Does anyone find it peculiar that those miners are coming out in clean clothes? Many clean shaven too.
by headscratcher
Mon Sep 27, 2010 1:39 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Life's geological origins vis a vis panspermia
Replies: 10
Views: 2548

Life's geological origins vis a vis panspermia

In the question of how life appeared on Earth, did it arrive or emerge, the geology of the Earth is important. Geologic elements needed for life must have concentrated to be useful. The material of Earth arrived in a mixed hodge podge of dust, molton and vaporized minerals from meteors, proto planet...
by headscratcher
Thu Sep 23, 2010 9:02 am
Forum: The Library: Information Desk and Educational Resources
Topic: Non expanding red shift model
Replies: 6
Views: 1330

Re: Non expanding red shift model

Thanks for your reply. So l let me see if I've got this here. When the model pops into existance the gravitational influence also pops in already connecting all matter. The following model could be produced. A lineup of stars and planet. From left to right. A star the size of our sun, 10 light minut...
by headscratcher
Mon Sep 20, 2010 7:47 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Non expanding red shift model
Replies: 6
Views: 1330

Re: Non expanding red shift model

So I'm wrong about gravity crossing space at the speed of light? What is the physical nature of the information in gravity that does cross at the speed of light?
by headscratcher
Mon Sep 20, 2010 1:42 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Non expanding red shift model
Replies: 6
Views: 1330

Non expanding red shift model

I guess that's a pretty wild claim. I'm not making such a claim. I was talking to a friend about an astronomy show a couple of weeks ago that got me thinking along a line that led to a strange conclusion regarding cosmological red shift. It's got me scratching my head. He said I could come here and ...