So there aren't any commercial packages that you could use either. I'm pretty sure all the CAD software licences I have read explicit disclaim their accuracy.
I'm sure I've had some gadgets that only count as 0.9 of a device, the most recent being a 3g mobile phone. It was a heap of doggy doodoos - crap interface, crap features, half of which didn't work and the rest of which you had to pay to use.
However, perfect vacuums do not exist either. The intergalactic cluster medium is the best vacuum we know of (at about 1 hydrogen atom per cubic centimeter), but this still has a temperature (>10^5 K) and a sound speed.
The last thing you want within miles of a sensitive radio telescope is any kind of powerful transmitting equipment, as it would probably fry the detectors, and prevent any kind of astronomical observation. Since many other countries are involved in the telescope, at least at the advisory level, I can't imagine any kind of actual military testing at the site. In any case, there are very few powerful compact sources in the 100-300 GHz range (which is one of the reasons why astronomy in this band is difficult)
The most likely military application is the optics control required to get a telescope of this size and surface accuracy to work efficiently. That wouldn't involve any transmissions from the site.
It's still to be fully calibrated. That's what first light literally means, the first astronomical light to pass through the instrument, so that you can start the shakedown tests and calibrations.
More indirect data on galaxy clustering and galaxy dynamics (especially of small galaxies) to help constrain the properties of dark matter (in particular the interaction of dark matter with other dark matter) would also be useful, as is noted in the paper.
This probably requires a number of astronomical surveys (mainly Sunyaev-Zeldovich effect surveys for galaxy clusters at microwave/mm-wave frequencies, and optical and radio surveys for galaxy dynamics) to give large datasets from which the statistical properties can be used to infer properties of dark matter over a range of length scales.
In Oxford we're also developing the instruments to carry out these surveys. In particular, various people will be developing the Square Kilometer Array http://www.skatelescope.org/ which will be the primary radio survey instrument from 2020, extremely large optical telescopes such as OWL, and technology for the next generation of S-Z effect surveys at mm wavelengths.
Dark matter particle direct search experiments, such as CRESST II are also under development, and should start operating on a similar timescale to the LHC.
Freedom2surf is starting to offer 24 Mbps ADSL in the UK at the moment. 8 Mbps is 30 GBP (50 USD) a month uncapped from them, and there are many other providers doing similar things. So theoretically Wi max can provide 3x this service that you can actually buy now.
Lots of guitarists use something similar to power multiple FX pedals on stage. However FX pedals tend to be fairly low power, and all at simialr voltages (as they mostly run on 9V square batteries).
Contact someone who puts together racks of FX for guitarists/stage musicians?
The problem is that we are already rapidly cutting particulate emissions (as part of buring oil more cleanly than before, due to oil prices as much as environmentalism), so global dimming should ease soon. The greenhouse effect won't ease though (even clean burning butane releases CO2), so the temperature rises observed so far will accelerate, even if the atmospheric CO2 levels stay the same.
The sunlight is hitting the earth, just not reaching the surface. This has the effect of heating the upper atmosphere, and reducing the power at the earth's surface.
You may now run some atmospheric modelling code to work out what the hell this will do to the climate.
An immediate conclusion made in the article is that this effect is masking the current rate of climate change due to CO2, so that as we clean up the atmosphere due to reduced particulate emissions, the greenhouse effect will get worse, even if there isn't an increase in CO2 in the atmosphere.
Slashdot Mirror
Xtraordinary Xebu
So there aren't any commercial packages that you could use either. I'm pretty sure all the CAD software licences I have read explicit disclaim their accuracy.
Penguinquisition
or
Inquistion is Not Quite the Usual InquiSITION
(guess where I got bored in the previous line)
I'm sure I've had some gadgets that only count as 0.9 of a device, the most recent being a 3g mobile phone. It was a heap of doggy doodoos - crap interface, crap features, half of which didn't work and the rest of which you had to pay to use.
However, perfect vacuums do not exist either. The intergalactic cluster medium is the best vacuum we know of (at about 1 hydrogen atom per cubic centimeter), but this still has a temperature (>10^5 K) and a sound speed.
I want Skype on me mobile phone!
1 mm = 300 GHz, 3 mm = 100 GHz
The last thing you want within miles of a sensitive radio telescope is any kind of powerful transmitting equipment, as it would probably fry the detectors, and prevent any kind of astronomical observation. Since many other countries are involved in the telescope, at least at the advisory level, I can't imagine any kind of actual military testing at the site. In any case, there are very few powerful compact sources in the 100-300 GHz range (which is one of the reasons why astronomy in this band is difficult)
The most likely military application is the optics control required to get a telescope of this size and surface accuracy to work efficiently. That wouldn't involve any transmissions from the site.
Yah!
It's still to be fully calibrated. That's what first light literally means, the first astronomical light to pass through the instrument, so that you can start the shakedown tests and calibrations.
It'll only be complete by then if the American's find some cash.
More indirect data on galaxy clustering and galaxy dynamics (especially of small galaxies) to help constrain the properties of dark matter (in particular the interaction of dark matter with other dark matter) would also be useful, as is noted in the paper.
This probably requires a number of astronomical surveys (mainly Sunyaev-Zeldovich effect surveys for galaxy clusters at microwave/mm-wave frequencies, and optical and radio surveys for galaxy dynamics) to give large datasets from which the statistical properties can be used to infer properties of dark matter over a range of length scales.
In Oxford we're also developing the instruments to carry out these surveys. In particular, various people will be developing the Square Kilometer Array http://www.skatelescope.org/ which will be the primary radio survey instrument from 2020, extremely large optical telescopes such as OWL, and technology for the next generation of S-Z effect surveys at mm wavelengths.
Dark matter particle direct search experiments, such as CRESST II are also under development, and should start operating on a similar timescale to the LHC.
and Dutch football
Freedom2surf is starting to offer 24 Mbps ADSL in the UK at the moment. 8 Mbps is 30 GBP (50 USD) a month uncapped from them, and there are many other providers doing similar things. So theoretically Wi max can provide 3x this service that you can actually buy now.
Lots of guitarists use something similar to power multiple FX pedals on stage. However FX pedals tend to be fairly low power, and all at simialr voltages (as they mostly run on 9V square batteries).
Contact someone who puts together racks of FX for guitarists/stage musicians?
The problem is that we are already rapidly cutting particulate emissions (as part of buring oil more cleanly than before, due to oil prices as much as environmentalism), so global dimming should ease soon. The greenhouse effect won't ease though (even clean burning butane releases CO2), so the temperature rises observed so far will accelerate, even if the atmospheric CO2 levels stay the same.
You mean before the last 50 years?
The sunlight is hitting the earth, just not reaching the surface. This has the effect of heating the upper atmosphere, and reducing the power at the earth's surface.
You may now run some atmospheric modelling code to work out what the hell this will do to the climate.
An immediate conclusion made in the article is that this effect is masking the current rate of climate change due to CO2, so that as we clean up the atmosphere due to reduced particulate emissions, the greenhouse effect will get worse, even if there isn't an increase in CO2 in the atmosphere.
Well, AI with Turing machines has allegedly been proven mathematically impossible. At least no one is claiming that for controlled fusion. Yet.
Orbits of small mases about large masses are only determined by the mass of the central body.
That's a fundamental result of Einstein's strong equivalence principle.
The mass can affect the orbit if the orbit is low enough to interact with the atmosphere.
WTF are you talking about? CRTs use elctron beams, not EM waves, so antennas have nothing to do with it.
I asssure you, there is plenty of land there. Else the dry valleys (where there's no ice) would be oceans.
The term seeing also applies to the radio bands, so it's not just a measure of intensity variations.
But all of the rotated states on its side are identical, and so count as one distinguishable state.
No, what all this is about is atmospheric turbulence, water vapour content, and base altitude.
It's a hell of a lot easier to fly down there to replace broken parts than it is to replce broken parts on a space telescope at L2...