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kzb
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kzb
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2021-Jan-14,
01:18 AM
kzb
replied to a thread
What area of the Milky Way do we see?
in
Space/Astronomy Questions and Answers
It does seem to say that, because they say the reason the novae were missed is dust obscuration. I was thinking it could also be that they weren't...
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30 replies | 1063 view(s)
2021-Jan-12,
02:39 AM
kzb
replied to a thread
What area of the Milky Way do we see?
in
Space/Astronomy Questions and Answers
As we thought, most MW novae have been missed because they are heavily obscured by dust in the optical. A population of heavily reddened,...
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30 replies | 1063 view(s)
2021-Jan-07,
12:57 AM
kzb
replied to a thread
Curious about nuclear thermal propulsion
in
Space/Astronomy Questions and Answers
I'm just saying it doesn't seem reasonable to dispose of such an expensive piece of kit when you could have, at worst, a few square metres of...
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16 replies | 451 view(s)
2021-Jan-06,
06:40 PM
kzb
replied to a thread
Curious about nuclear thermal propulsion
in
Space/Astronomy Questions and Answers
Yes 1600K is hot but what is the reactor temperature when it is operation? According Wikipedia this was 2406K, back in the 1960's. It seems...
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16 replies | 451 view(s)
2021-Jan-06,
03:46 PM
kzb
replied to a thread
Curious about nuclear thermal propulsion
in
Space/Astronomy Questions and Answers
Hang on though. The 1960's NTR's were designed as upper stages escaping Earth gravity, needing plenty of thrust As such they generated Gigawatts,...
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16 replies | 451 view(s)
2021-Jan-04,
04:20 PM
kzb
replied to a thread
Box of smoke
in
Science and Technology
No, but the problem is related to Brownian motion and diffusion. When you think of a particle in a fluid undergoing Brownian motion, at first...
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15 replies | 315 view(s)
2021-Jan-04,
03:26 PM
kzb
replied to a thread
Box of smoke
in
Science and Technology
I can't find a link which explains it, but I am sure I've read this somewhere. After all, heavy gas molecules don't settle out, they just have a...
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15 replies | 315 view(s)
2021-Jan-03,
02:37 PM
kzb
replied to a thread
What is this called?
in
Science and Technology
Seems to be called Frederiks now. Shame.
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22 replies | 442 view(s)
2021-Jan-03,
01:33 PM
kzb
replied to a thread
What is this called?
in
Science and Technology
There used to be a bar in Liverpool called Road Kill. Don't know if it is still there.
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22 replies | 442 view(s)
2021-Jan-02,
08:57 PM
kzb
replied to a thread
Box of smoke
in
Science and Technology
There will be a certain particle size (and mass) below which Brownian motion will keep it suspended indefinitely. But if the particles interact...
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15 replies | 315 view(s)
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