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Can a Science "Brain" Answer my Question About Hubble?

Osprey Therian
I want capslocklock
Join date: 6 Jul 2004
Posts: 5,049
01-06-2010 11:13
From: Lear Cale
Don't forget the all-important sonic orifice: the compressed air goes through this before being burned.


And this, in common parlance, is called "an internet forum."
Lear Cale
wordy bugger
Join date: 22 Aug 2007
Posts: 3,569
01-06-2010 11:29
From: Osprey Therian
And this, in common parlance, is called "an internet forum."
lol, that's a different kind of orifice.
Argent Stonecutter
Emergency Mustelid
Join date: 20 Sep 2005
Posts: 20,263
01-06-2010 11:29
Buzz bomb was the V-1. The crazy thing is people have started making homebrew pulsejets and doing all kinds of crazy things with them. Like this:

http://www.youtube.com/watch?v=yy4KH88tLSY
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Lindal Kidd
Dances With Noobs
Join date: 26 Jun 2007
Posts: 8,371
01-06-2010 11:38
Not just homebrew pulsejets, Argent.

A while back, the Geek (who used to fly radio controlled airplanes back B.C. -- Before Computers) showed me a clip of a model plane that had an actual, tiny, jet engine. Not a fan driven by a gas or electric motor...a turbojet you could hold in your hand.

When he told me the plane, radio, and engine cost "only" about $7,000, I told him "No WAY". He still has the remains of some former crashes sitting around.
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Lear Cale
wordy bugger
Join date: 22 Aug 2007
Posts: 3,569
01-06-2010 12:36
From: Argent Stonecutter
Buzz bomb was the V-1.
That makes more sense. Thanks for the correction.
Ghosty Kips
Elora's Llama
Join date: 2 May 2008
Posts: 2,386
01-06-2010 13:15
From: Phil Deakins
Yes - but I'm being pedantic :) And I think it's good to be because many people believe that things are true without realising that they are just hypotheses.


Fixed. :)
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Seven Okelli
last days of pompeii
Join date: 4 Dec 2008
Posts: 2,300
01-06-2010 13:20
From: Maureen Boccaccio
I just want to say that I'm getting all hot and bothered reading all this cool science stuff you folks know, and can explain.

*goes to take a cold shower*


Yeah, I know... I'm trying to come up with a question of my own. ;)
Phil Deakins
Prim Savers = low prims
Join date: 17 Jan 2007
Posts: 9,537
01-06-2010 13:25
From: Ghosty Kips
Fixed. :)
Thank you :)
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Phil Deakins
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01-06-2010 13:42
From: Lear Cale
Right, and the theory of gravitation is just a theory too.
It is, and I'm not aware of any theory or hypothesis of how it actually works. The General Theory of Relativity warped space but it doesn't predict a direction for objects to move in the warped space. What I mean is - space is bent towards mass by the mass, such as the Earth. If you place an object close enough to the Earth to be in the curved space caused by the Earth, and stationary with respect to the Earth so that you don't give it an initial direction of movement, it will fall to Earth. Why? Why won't it set off the other way along the curvature?

Sorry about writing that, but it's one of my long-time questions. I have an idea of my own but I'll probably never know if it's anywhere near the truth. If the Higgs field is discovered, my idea will seem to be be a step closer to reality.
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Argent Stonecutter
Emergency Mustelid
Join date: 20 Sep 2005
Posts: 20,263
01-06-2010 13:45
From: Lindal Kidd

A while back, the Geek (who used to fly radio controlled airplanes back B.C. -- Before Computers) showed me a clip of a model plane that had an actual, tiny, jet engine. Not a fan driven by a gas or electric motor...a turbojet you could hold in your hand.

When he told me the plane, radio, and engine cost "only" about $7,000, I told him "No WAY". He still has the remains of some former crashes sitting around.
Awesome. Oh yes, I can totally believe that price.

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"And now I'm going to show you something really cool."

Skyhook Station - http://xrl.us/skyhook23
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Seven Okelli
last days of pompeii
Join date: 4 Dec 2008
Posts: 2,300
01-06-2010 13:50
From: Lindal Kidd
Not just homebrew pulsejets, Argent.

A while back, the Geek (who used to fly radio controlled airplanes back B.C. -- Before Computers) showed me a clip of a model plane that had an actual, tiny, jet engine. Not a fan driven by a gas or electric motor...a turbojet you could hold in your hand.

When he told me the plane, radio, and engine cost "only" about $7,000, I told him "No WAY". He still has the remains of some former crashes sitting around.


What is really amazing is the way they make the miniature jet fuel for those things.
Lindal Kidd
Dances With Noobs
Join date: 26 Jun 2007
Posts: 8,371
01-06-2010 13:57
From: Phil Deakins
...I have an idea of my own but I'll probably never know if it's anywhere near the truth. If the Higgs field is discovered, my idea will seem to be be a step closer to reality.


I'm starting to see what Mo finds exciting when people talk science to her. Keep going, baby!
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Meade Paravane
Hedgehog
Join date: 21 Nov 2006
Posts: 4,845
01-06-2010 14:00
From: Lindal Kidd
Not just homebrew pulsejets, Argent.

A while back, the Geek (who used to fly radio controlled airplanes back B.C. -- Before Computers) showed me a clip of a model plane that had an actual, tiny, jet engine. Not a fan driven by a gas or electric motor...a turbojet you could hold in your hand.

When he told me the plane, radio, and engine cost "only" about $7,000, I told him "No WAY". He still has the remains of some former crashes sitting around.

/me points! http://www.youtube.com/watch?v=AsfjOK_LcNE
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Tod69 Talamasca
The Human Tripod ;)
Join date: 20 Sep 2005
Posts: 4,107
01-06-2010 15:38
From: Lindal Kidd
Not just homebrew pulsejets, Argent.

A while back, the Geek (who used to fly radio controlled airplanes back B.C. -- Before Computers) showed me a clip of a model plane that had an actual, tiny, jet engine. Not a fan driven by a gas or electric motor...a turbojet you could hold in your hand.

When he told me the plane, radio, and engine cost "only" about $7,000, I told him "No WAY". He still has the remains of some former crashes sitting around.


I remember seeing those. Even sounded like a jet!

Now they have tiny lil' electric motor ones that makes lil' screechy jet noises.


As for time travel, THIS is how NOT to do it:

http://www.youtube.com/watch?v=rVw2EBfMphI
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Bobbi Finesmith
Registered User
Join date: 6 Aug 2008
Posts: 40
01-06-2010 15:55
We all know that light travels faster than sound. What happens when the sound from the "big bang" finally arrives?
Phil Deakins
Prim Savers = low prims
Join date: 17 Jan 2007
Posts: 9,537
01-06-2010 15:56
From: Bobbi Finesmith
We all know that light travels faster than sound. What happens when the sound from the "big bang" finally arrives?
We run like hell.
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Seven Okelli
last days of pompeii
Join date: 4 Dec 2008
Posts: 2,300
01-06-2010 16:23
From: Bobbi Finesmith
We all know that light travels faster than sound. What happens when the sound from the "big bang" finally arrives?


The next yuga begins.
Void Singer
Int vSelf = Sing(void);
Join date: 24 Sep 2005
Posts: 6,973
01-06-2010 16:26
it's even more correct to say that the hubble is seeing a portion of the universe at that time period... and in the simplest sense can be show with some simple geometry.

make a circle to represent the total known universe after the big bang. pick several points on the circle and mark them. draw a line from the center of the circle through each point, that is the length of the diameter of the circle. the end will represent how far we have moved since the time the universe was that size. next draw a circle that is 1.5 times the size as the original around each of our chosen points... this will represent the light coming from those points at that time (because light moves faster). the place each circle intersects a straight line is where we would have needed to be to see exactly that much time back, to that exact OTHER point. you'll notice if the points are to close our line doesn't extend to then (we're moving slower than the light wich has already passed us), and some that are farther away may have intersected us before now (the light from that time already passed us)
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Oryx Tempel
Registered User
Join date: 8 Nov 2006
Posts: 7,663
01-06-2010 17:52
I heart this thread. :)
Dakota Tebaldi
Voodoo Child
Join date: 6 Feb 2008
Posts: 1,873
01-06-2010 19:04
Ah, Physics. All I know about Physics is that at the moment the teacher first wrote "W = F x D" on the board, Force and Distance became my mortal enemies forever.
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DanielRavenNest Noe
Registered User
Join date: 26 Oct 2006
Posts: 1,076
01-06-2010 20:49
From: Bobbi Finesmith
We all know that light travels faster than sound. What happens when the sound from the "big bang" finally arrives?


Already here, it's encoded in ripples in the cosmic background radiation. You can listen to audio clips here:

http://spacecollective.org/fredjc/3081/The-Sound-of-Cosmic-Background-Radiation


(it had to be transposed up 55 octaves to hear, because the frequency is one cycle per 30,000 years, while human hearing requires 20 cycles per second or higher)

It really was sound waves traveling in the hot plasma back then. And since compression and expansion leads to temperature changes, we see it as hot and cold spots. Those cold spots that were a little denser also had stronger gravity, and tended to collect even more matter at the expense of the hotter and less dense areas. This led to the formation of the galaxies we know today. So we are here today partly due to the sound from the big bang :-).
SuezanneC Baskerville
Forums Rock!
Join date: 22 Dec 2003
Posts: 14,229
01-06-2010 21:55
I think if you go back past the big bang it connects to the end of the undying thread.
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Lear Cale
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Join date: 22 Aug 2007
Posts: 3,569
01-07-2010 10:21
From: SuezanneC Baskerville
I think if you go back past the big bang it connects to the end of the undying thread.
AHA! Now everything makes sense! ;-)
Phil Deakins
Prim Savers = low prims
Join date: 17 Jan 2007
Posts: 9,537
01-07-2010 10:28
Not so fast, Lear. What is the end of the undying thread *doesn't* connect to immediately before the big bang. That thread could create a new big bang that would threaten our very universe.
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Seven Okelli
last days of pompeii
Join date: 4 Dec 2008
Posts: 2,300
01-07-2010 10:32
From: Phil Deakins
Not so fast, Lear. What is the end of the undying thread *doesn't* connect to immediately before the big bang. That thread could create a new big bang that would threaten our very universe.


I'm pretty sure I've detected some bozons there. (or is it "boson"?)
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