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What is the highest radio frequency used for astronomy?
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| jimp@specsol.spam.sux.com 2007-08-30, 5:25 pm |
| In sci.physics Radium <glucegen1@gmail.com> wrote yet again:
<snip>
How many times are you going to post this?
--
Jim Pennino
Remove .spam.sux to reply.
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| Radium 2007-08-30, 8:25 pm |
| On Aug 30, 3:05 pm, j...@specsol.spam.sux.com wrote:
> How many times are you going to post this?
What is the highest radio frequency used for radio astronomy?
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| jimp@specsol.spam.sux.com 2007-08-30, 8:25 pm |
| In sci.physics.electromag Radium <glucegen1@gmail.com> wrote:
> On Aug 30, 3:05 pm, j...@specsol.spam.sux.com wrote:
[color=darkred]
> What is the highest radio frequency used for radio astronomy?
Already asked and answered several times.
How many times are you going to post this?
--
Jim Pennino
Remove .spam.sux to reply.
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| Salmon Egg 2007-08-31, 3:25 am |
| On 8/30/07 2:49 PM, in article
1188510546.291849.307630@q4g2000prc.googlegroups.com, "Radium"
<glucegen1@gmail.com> wrote:
> Hi:
>
> What is the highest radio frequency used for astronomy?
>
> According to the link below, it is 3438 GHz:
>
> http://books.nap.edu/openbook.php?r...d=11719&page=11
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> Is 3438 GHz the highest radio frequency used for astronomy?
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>
> Thanks,
>
> Radium
>
Do you measure height from the Earth's surface or from the Earth' center?
--
The PC conservative does not believe in evolution but likes to see natural
selection proceed. The PC liberal believes in evolution but will do almost
anything to prevent natural selection from working.
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Radium wrote:
> On Aug 30, 3:05 pm, j...@specsol.spam.sux.com wrote:
>
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> What is the highest radio frequency used for radio astronomy?
What is the highest frequency radiation that is considered radio waves?
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| Dan Bloomquist 2007-08-31, 3:25 am |
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Salmon Egg wrote:
> On 8/30/07 2:49 PM, in article
> 1188510546.291849.307630@q4g2000prc.googlegroups.com, "Radium"
> <glucegen1@gmail.com> wrote:
>
>
> Do you measure height from the Earth's surface or from the Earth' center?
Are you feeding the troll??????????
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| Dan Bloomquist 2007-08-31, 3:25 am |
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Benj wrote:
> Radium wrote:
>
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> What is the highest frequency radiation that is considered radio waves?
Have you not read the 'opinion'? Radium is a troller. You are feeding
the troll. Good luck with your catch.........
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| Bill Miller 2007-08-31, 9:25 am |
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"Dan Bloomquist" <public21@lakeweb.com> wrote in message
news:BtOBi.15153$B25.1871@news01.roc.ny...
>
>
> Benj wrote:
>
>
>
> Have you not read the 'opinion'? Radium is a troller. You are feeding the
> troll. Good luck with your catch.........
OK.. I guess I'm a 'newbie' on this subject. What is the 'opinion?' And what
is a 'troll,' -- other than the creature that lives under the bridge and was
dumped in the water by Billygoat Gruff?
Bill
..
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| Morris Dovey 2007-08-31, 9:25 am |
| Bill Miller wrote:
| OK.. I guess I'm a 'newbie' on this subject. What is the 'opinion?'
| And what is a 'troll,' -- other than the creature that lives under
| the bridge and was dumped in the water by Billygoat Gruff?
In usenet speak, a "troll" is someone who posts solely for the purpose
of getting attention (any kind of attention - to them, praise is best
but abuse will do). They'll usually go elsewhere if ignored.
--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/
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| Randy Poe 2007-08-31, 1:25 pm |
| On Aug 31, 1:46 am, Benj <bjac...@iwaynet.net> wrote:
> Radium wrote:
>
>
>
> What is the highest frequency radiation that is considered radio waves?
I think there are practical considerations that restrict radio
astronomy, such as commercial satellite transmitters.
http://www.nrao.edu/whatisra/images/spillover3.jpg
>From the hardware standpoint, I think the ability to do
"radio" astronomy depends on your ability to do coherent
integration of energy, i.e., use both amplitude and phase
information. And as the link posted by radium in his first
post says:
", blurring the distinction between radio astronomy and
infrared astronomy. With the advent of Earth-to-space
telecommunications near 1 =B5m wavelength (300 THz)
and the need to regulate for avoiding interference with
optical observatories, the distinction between different kinds
of astronomy will eventually vanish from the regulatory
perspective."
In other words, he already posted the answer to his question:
we haven't seen the upper limit yet, if there is one.
- Randy
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| Salmon Egg 2007-08-31, 1:25 pm |
| On 8/30/07 11:20 PM, in article AqOBi.15151$B25.9211@news01.roc.ny, "Dan
Bloomquist" <public21@lakeweb.com> wrote:
> Are you feeding the troll??????????
I guess so. I am trying to figure out how to poison the food.
Bill
--
The PC conservative does not believe in evolution but likes to see natural
selection proceed. The PC liberal believes in evolution but will do almost
anything to prevent natural selection from working.
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| Radium 2007-08-31, 5:25 pm |
| On Aug 31, 12:43 pm, Dan Bloomquist <publi...@lakeweb.com> wrote:
> http://www.ivoa.net/internal/IVOA/I...m-20040520.html
Can millimetric-frequency receivers be used on a space station to
detect signals emitted by extremely-distant cosmic object -- e.g.
magnetars?
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