Search found 24 matches

by dcmcp
Wed Nov 29, 2006 3:24 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: speed of light
Replies: 25
Views: 9399

As usual, Harry is ignoring all the evidence that is less than convenient for his cause. See previous posts in this thread by ckam - time dilation has been measured, and conforms to the expectations of SR within the limits of experimental error (and necessary corrections for GR effects). Also, if yo...
by dcmcp
Thu Nov 16, 2006 2:46 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Inner Core of our sun
Replies: 294
Views: 50050

Nereid wrote:The link in this post crashed my browser.
Can you please check it, Michael?
I'm not Michael, but the link is working fine for me

03:45 GMT 16 Nov 2006

IE 6 SP1
Win NT 4 SP6

Accessing link from Melbourne, Australa.
(You will need an acrobat plug-in installed.)
by dcmcp
Wed Oct 04, 2006 7:02 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Branes and the Big Bang
Replies: 44
Views: 16448

Hello All Wadsworth said what makes the rate of decay decrease as speed/motion increase!? Does it? Gawd Harry! The experiments that prove this are too mumerous to mention. They involve things like cosmic ray obsevations, synchronised (atomic) clocks, even the corrections required for the GPS system...
by dcmcp
Wed Sep 27, 2006 5:07 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: "Flares" in Eris Photo (APOD 18 Sep 2006)
Replies: 18
Views: 7155

Re: A General Question

NeoEspiritus wrote:Why is is that we can get crystal-clear images of galaxies millions of light-years away and nebulae hundreds of light years away, but all the images of something a couple hundred million miles away come back looking like sonogram pictures? Someone please enlighten me!!
See this thread
by dcmcp
Fri Sep 22, 2006 4:39 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Black Hole Event Horizon
Replies: 59
Views: 21406

The bit about spaghettification is not necessarily correct either. Spaghettification is a result of the force of Gravity being stronger at you toes than your head (your toes are closer the the centre of the Earth - or the black hole). If the black hole is sufficiently large, this difference is negli...
by dcmcp
Wed Sep 20, 2006 7:02 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Globular Clusters and why the "Big Bang" is Wrong!
Replies: 112
Views: 27858

To suggest that the universe has a shape implies that it has boundaries/limitations. This, in turn, implies that there exists something beyond the shape that “it” is not part of :!: Er - no. This is difficult to discuss because it is outside our normal perceptions, and our vocabulary cannot cope wi...
by dcmcp
Tue Sep 19, 2006 2:42 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Globular Clusters and why the "Big Bang" is Wrong!
Replies: 112
Views: 27858

If the universe is expanding like a balloon; we should still be able to see beyond that with good enough telescopes. I don't see why not. :? My post was very poorly written. Sorry about that. Qev's post is much better. Have a look at this article . The explanation is about the same as that which Qe...
by dcmcp
Mon Sep 18, 2006 10:46 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Globular Clusters and why the "Big Bang" is Wrong!
Replies: 112
Views: 27858

Thanks for your input astro_uk. I wish the JWST was now. If there was a BB; we should be able to see the edge of our universe. You're assuming the universe has an edge. That would be true if it was shaped like an expanding sphere (3D object). However, if it is shaped more like the expanindg skin of...
by dcmcp
Sat Sep 16, 2006 12:34 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Multiple Ringed Craters
Replies: 76
Views: 19702

craterchains wrote:From a real astronomer.
http://www.lpod.org/?m=20060915
And this is significant...
..how?
I see impact events that happen to be separated in time, but not in space.
Do your own research work astro. :roll:
:roll: astro's response says it all.
by dcmcp
Thu Sep 14, 2006 12:28 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Newton's Laws and The Bending of Light
Replies: 34
Views: 11824

It would seem that "mass less" particle would be bound to gain infinite velocity and always travel along straight lines in that theory.... That's why yez gotta use limits :wink: The Gravitational force on a massless particle is zero a=F/m=0/0=??? I mean different thing. Suppose there's ma...
by dcmcp
Wed Sep 13, 2006 7:03 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Newton's Laws and The Bending of Light
Replies: 34
Views: 11824

Hi ckam, I would like to re-iterate my "newtonian" equation: hv (or any amount of photon kinetic energy) = mc^2/2. I don't like this approach. Not because it is any less valid than mine (or indeed the rest of the discussion). But for purely aesthetic reasons: Classically KE=mv^2/2 and p=mv...
by dcmcp
Tue Sep 12, 2006 5:29 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Newton's Laws and The Bending of Light
Replies: 34
Views: 11824

But how would you explain it if you didn't know about relativity? How could Newton have explained it? and later But I don't think we can make an argument about it using relativity-talk. This is more of an historical question. You don't need to invoke relativity to get an (albeit incorrect) explanat...
by dcmcp
Mon Sep 04, 2006 11:13 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: The Standard Model
Replies: 24
Views: 8214

thus by mistake we also learned that electricity flows from - to +, an exact oposite of what all the previous text books said This is true only in materials that conduct electricity with electrons or negatively charged ions - such as metals and n-type semiconductors . In materials that conduct elec...
by dcmcp
Thu Aug 31, 2006 6:21 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Origins of the UNIVERSE
Replies: 829
Views: 154218

Theories have been proven wrong (including Harry's, he just doesn't know it yet)... I've been trying to figure Harry out - and can't. He doesn't seem to have a religious agenda, so I'm inclined to think that he tries to understand the information presented using an intuitive or common sense approac...
by dcmcp
Thu Aug 31, 2006 1:00 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Origins of the UNIVERSE
Replies: 829
Views: 154218

mybluecowboy wrote:Is there any one formula, theory, hypothesis, or observation about the begining (or lack therof) of the universe that is unequivicably absolute?
(My emphasis)
That would be Faith or Religion. It is not astronomy, cosmology or Physics.
by dcmcp
Wed Aug 02, 2006 11:02 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Methane rain possible on Titan (APOD 2 Aug 2006)
Replies: 12
Views: 4841

Re: Lightning on Titan?!?!?!?!?

johnnyc8 wrote:....methane is an outrageously flammable substance...
In a methane atmosphere, free oxygen is by necessity rare. So to a native of Titan Oxygen is the flammable substance (since Oxygen burns in a methane atmosphere).
by dcmcp
Fri Jul 14, 2006 1:30 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: ASTERISK CAFE
Replies: 5
Views: 3305

I agree. (It's easy to say "they ought to....") Once the existing mess is cleaned up, there are ways to keep on top of it. Of course, it needs someone with Moderator rights to do this (no, I'm not volunteering - just offering up ideas for consideration). I believe there is a phpBB hack ava...
by dcmcp
Sun Jun 18, 2006 11:06 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: What is a Nebulae?
Replies: 6
Views: 4225

Except maybe this one and this one which were named clouds. :wink:
On a clear night in the right place they are spectacular - even to the naked eye.
by dcmcp
Wed May 10, 2006 2:37 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Speed Of Gravity
Replies: 47
Views: 18509

Dunno if anyone's posted this link (I've only skimmed the thread):
http://en.wikipedia.org/wiki/Speed_of_gravity
According to wikipedia spd of Gravity = c
by dcmcp
Mon Mar 20, 2006 1:45 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Busy Solar System 19/3/2006
Replies: 4
Views: 2684

It is unnerving just how many pass so close to earth! (though, they cant be *that* close because i notice their paths of travel are not visibly altered by Earth's gravity) Not close at all. The scale is such that there is a noticeable curve in the Earth's orbit. [Opinion-guess]At this scale the Ear...
by dcmcp
Mon Jan 23, 2006 12:13 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Question about Capella
Replies: 3
Views: 2670

Re: Question about Capella

dcmcp wrote:[I can't give you any references....
I can now give you a place to start: Today's APOD


EDIT - Spelling
by dcmcp
Fri Jan 20, 2006 4:07 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Question about Capella
Replies: 3
Views: 2670

Re: Question about Capella

...is if there is some study on whether could be any kind of life form known to us that could survive under harsh environmental conditions, as the conditions found in Capella System (for example I discovered that their stars are much more brighter than our sun and that their x-ray emmisions are ver...
by dcmcp
Wed Jan 18, 2006 3:42 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Bright and Morning Star
Replies: 4
Views: 9155

Re: Bright and Morning Star

IAround 6am (Pacific Standard Time) in southern California, where I live. I saw a star that looked like a planet move from left to right and then get brighter and smaller 3 times. I've seen this sort of thing once or twice. Usually close to the horizon. The most likely explanation is atmospheric ef...
by dcmcp
Wed Jan 18, 2006 3:04 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Roll clouds
Replies: 4
Views: 1666

These occur regularly on the Australian Gulf of Carpentaria, where thye are called the Morning Glory. Those crazy Aussies take switch back rides on them, in microlights! See: http://home.iprimus.com.au/budmartin/frank/Aerial%20Worx%20Morning%20Glory.htm Jon More on the Morning Glory and other (Aust...