The thing that science has going for it is that it works. (It also, BTW, happens to older than any
commonly practiced religion except maybe for Hinduism.) Science will do just fine and is in no danger.
It's my country that I worry about.
Why ? Maybe I want to bring up Al Gore, or Richard Dawkins. Be polite, sure, I always try and be polite, but on the other
hand I see no reason to pull any punches.
Precisely. Newton didn't care that the Catholic Church became angry when he said the earth is Not the center of the universe.
First, Newton lived in Protestant England. He didn't have to care about the Pope. Second, Newton did care a lot about the opinion of others, which is
why his Alchemical and mystical writings were hidden for so long.
Are you sure it's Cogent and not TELIANET ? The reason I ask is that I get AS 3308 - TELIANET-DENMARK through Cogent using their AS 1299 - TELIANET peering :
174 3292 15423 2686 1299 3308
In fact, I am getting routes from 28 ASN through AS 1299.
But I get nothing from AS 1299 directly.
Cogent is thus allowing traffic that transits AS 1299 - and so it is not clear to me which side is blocking the 1299 routes.
(Cogent may have taken the peering down, but TELIANET may not want their traffic to use more expensive paid for peerings through other providers. In fact, that seems more likely to me than Cogent blocking the routes entirely due to spite.)
I don't see why that is true. Charter Cable may use Qwest's circuits but do they use Qwest's BGP peering ? Not
according to my BGP tables. So, if Qwest and (say) Cogent get in a fight, it shouldn't effect Charter, and maybe not the other
"small ISPs" you mention, at least if they are properly multi-homed.
The Culture is neither human or far in our future
on
Matter
·
· Score: 1
The Culture is not human, and most of the Culture novels occur in our (human) past.
The Minds (controlling AI) of Culture vessels pick their own names
I must admit that I admire a warship that would name itself Frank Exchange of Views (from Excession).
People have been bouncing single photon's off of the Moon for almost 40 years, using
Lunar Laser Ranging, or LLR.
Typically, with LLR a dense "pancake" of photons (maybe 1 meter across and a few mm deep)
is shot at the LLR site on the Moon, and one photon returns per shot.
Ajisai is a relatively large Japanese satellite intended for Satellite Laser Ranging (SLR).
Even though the SLR return is typically many photons, not just one, the ratio of (photons received back / photons sent) is still extremely tiny, and I rather doubt that they are
sending one photon up to get one back.
So, this sounds more like a press release than an actual advance.
These devices use sub mm wavelengths, which means that they would be stopped by metallic meshes with a mesh size of 0.1 mm or so. (I have seen women's party dresses with meshes like this).
So, what if I wear a metallic mesh shirt or coat ? Or pants ? So much for the T5000.
BTW, has any physicist ever used the term "T rays" ? What dumb-ass marketing guy thought that up ?
One of the broadcasters has posted the approximate figures for the overall distribution costs,...
No, they didn't. P2P pushes some of the distribution cost from the originator into the network, and I don't see that this is accounted for at all. If things like
Oprah-Skype at 242 Gbps become common, it will not be possible to ignore the distributed network costs.
Its biggest trick in my mind though you didn't see in the video - one little slider that takes you from the Optical to the Infrared and Microwave and X-Ray sky. Simply blew me away.
What about time ? Is there a means of moving forward and backwards in time ? (A lot of the interest in the Harvard Sky Patrol plate, for example, is that they sample the
sky in the past.)
(There are Florence's in Florida, Georgia, California and for all I know every state in the Union.)
Since this particular Florence is the one in Italy, the laws on defamation are pretty different from the US. I would not trust any legal analysis in Slashdot for any jurisdiction, but for Italy I would trust it even less than usual.
They also smashed the third stage of the Saturn V into the Moon for every Apollo after 13 IIRC, also as seismic probes. That had considerably more kinetic energy than either the LEM upper stages or any of the recent impacts.
It wasn't just to test the seismometers, it was to map the interior of the Moon, once they found out that the Moon is seismically pretty quiet and doesn't have much in the way of Moonquakes. It was thus a very large scale example of the seismic prospecting that is done frequently in oil exploration.
This kinda makes me wonder if NASA and other space agencies purposely over-estimate the useful lives of their spacecraft.
I have been involved with space flight projects, and you always hope that they last "forever." However, that scares program offices and the budget types. So, you specify a short, sweet, do-able missions, get money for that, and, if you are successful, hope that you can get money to extend it. If you are not successful, well, then it didn't really matter, did it ?
The mission of Ulysses was to use a Jupiter gravity assist to go out of the plane of the solar system, and thus observe the Sun from high solar latitudes. It fulfilled that mission and lasted long enough to observe both the North and South poles of the Sun. I would say it was fully successful.
It is not uncommon for the death of old spacecraft to be messy or even sloppy - the Viking 1 lander was killed by a programming bug - but that does not detract from their earlier successes.
if i open an ftp clear text password, it is natively encrypted by the protocol? or did i just hand everyone my ftp password?
If you use ftp or telnet, you should assume that everyone has your password, period (unless you do it over a VPN tunnel). Don't trust others to magically do your security for you.
I use Sprint EVD0, and I assume that it is just as open as the WiFi at Starbucks. But then, I also assume the same about my Cable Modem.
I have Sprint EVD0, and I really like it. (I signed up for the all you can eat service, so I don't have to worry about being nickeled and dimed to death.) It is not as fast as my home (Cable modem) service, but I can routinely get 250 Kbps streaming video, generally get 500 Kbps video, and occasionally get 1 Mbps video. I generally use it in hotels, for example, instead of the typical $ 10 / day hotel Internet charge, and I also use it around the house in places where the WIFI is sketchy.
Would I give up my Cable Internet ? If I didn't run a SOHO with heavy data transfer needs, I might. Your needs might vary, so you might consider it. (Another issue is that it would really take 2 accounts, one for me, one for the house, and since the prices are comparable the second account might as well be wireline.)
The satellite that was shot down yesterday was very, very close to the Earth's atmosphere. It was only one rotation, maybe less, away from starting to graze it (which means that it would slow down and begin to reenter and burn up). If we assume that when it was destroyed, pieces flew in all directions, some of them would have ended up with a greater net orbital velocity at the end. These pieces aren't the ones that exploded *up* (normal to the surface of the Earth), though, they're the ones that exploded *forward* (in the direction of the satellite's motion). They picked up some velocity and would end up in a slightly higher orbit as a result. I suspect it's not much of a higher orbit, though -- if anything, it probably just means they'll take a little longer to hit the atmosphere than other parts. It's tough to say without doing any calculations, but I doubt you have enough Delta-V to push the pieces into a long-term stable orbit. (Unless maybe the rocket fuel detonated.) The difference in velocities between high, long-term stable orbits and low atmosphere-grazing orbits is pretty substantial.
Not quite. The orbit of a body is determined by it's position and velocity. In an intercept, you don't change the position, only the velocity, and so you move pieces to a new orbit that still intersects the point where the intercept occurred. (At least until drag perturbs the orbit more.) So, every piece, unless it reached escape velocity, will still come back to the location, and thus the altitude, where the intercept occurred. (Of course, the Earth is rotating, so I am talking about a space-fixed frame, not an Earth-fixed frame; the latitude and altitude will be the same, but the longitude will be different.)
The pieces that went forward gained velocity, and so raised their Apogee (180 degrees of orbital phase away). They will last until drag circularizes their orbit where it was before, then they will de-orbit shortly after. The pieces that went backwards lowered their velocity, and thus their perigee, and should reenter immediately, 1/2 orbit later. The pieces that went cross-track just changed their inclination, and so they should also de-orbit, more or less on the original time-table. The pieces that went radially also changed their perigee or apogee, but not by much (radial orbit changes are much less efficient at changing eccentricity than along track ones), so they will keep to something like the original time table too.
So, your conclusion is still correct -all of the pieces will de-orbit relatively fast, unless they escaped the Earth's pull entirely. And, the Chinese satellite intercept, because the satellite was in a fairly high orbit, many of the pieces are in stable orbits, at least from drag. They are still sensitive to solar radiation effects (direct thrust, reflection, the Earth's thermal radiation, and the Yarkovsky effect of their thermal radiation ) which (because small pieces tend to have small mass to area ratios) tends to de-orbit small pieces of junk over months even in otherwise stable orbits.
Slashdot Mirror
And that certainly applies to the Drug War.
I have learned to trust my wife's reactions to people. She does see things I miss. A lot.
... a team of Indiana U. researchers has found that when people say "the check is in the mail," it generally isn't.
Really. Is there anything in this study that any stripper or any bouncer doesn't know by their second day on the job ?
The thing that science has going for it is that it works. (It also, BTW, happens to older than any commonly practiced religion except maybe for Hinduism.) Science will do just fine and is in no danger. It's my country that I worry about.
Why ? Maybe I want to bring up Al Gore, or Richard Dawkins. Be polite, sure, I always try and be polite, but on the other hand I see no reason to pull any punches.
Precisely. Newton didn't care that the Catholic Church became angry when he said the earth is Not the center of the universe.
First, Newton lived in Protestant England. He didn't have to care about the Pope. Second, Newton did care a lot about the opinion of others, which is why his Alchemical and mystical writings were hidden for so long.
Are you sure it's Cogent and not TELIANET ? The reason I ask is that I get AS 3308 - TELIANET-DENMARK through Cogent
using their AS 1299 - TELIANET peering :
174 3292 15423 2686 1299 3308
In fact, I am getting routes from 28 ASN through AS 1299.
But I get nothing from AS 1299 directly.
Cogent is thus allowing traffic that transits AS 1299 - and so it is not clear to me which side is blocking the 1299 routes.
(Cogent may have taken the peering down, but TELIANET may not want their traffic to use more expensive paid for peerings through other providers. In fact, that seems more
likely to me than Cogent blocking the routes entirely due to spite.)
I don't see why that is true. Charter Cable may use Qwest's circuits but do they use Qwest's BGP peering ? Not according to my BGP tables. So, if Qwest and (say) Cogent get in a fight, it shouldn't effect Charter, and maybe not the other "small ISPs" you mention, at least if they are properly multi-homed.
The Culture is not human, and most of the Culture novels occur in our (human) past.
The Minds (controlling AI) of Culture vessels pick their own names I must admit that I admire a warship that would name itself Frank Exchange of Views (from Excession).
People have been bouncing single photon's off of the Moon for almost 40 years, using Lunar Laser Ranging, or LLR.
Typically, with LLR a dense "pancake" of photons (maybe 1 meter across and a few mm deep) is shot at the LLR site on the Moon, and one photon returns per shot.
Ajisai is a relatively large Japanese satellite intended for Satellite Laser Ranging (SLR). Even though the SLR return is typically many photons, not just one, the ratio of (photons received back / photons sent) is still extremely tiny, and I rather doubt that they are sending one photon up to get one back.
So, this sounds more like a press release than an actual advance.
They do have clothes (even I can see that) but I bet that they have some sort of radio device under their clothes
to feed them answers.
I think that TeraHz imaging should be mandatory at all future presidential debates.
These devices use sub mm wavelengths, which means that they would be stopped by metallic meshes with a mesh size of 0.1 mm or so.
(I have seen women's party dresses with meshes like this).
So, what if I wear a metallic mesh shirt or coat ? Or pants ? So much for the T5000.
BTW, has any physicist ever used the term "T rays" ? What dumb-ass marketing guy thought that up ?
One of the broadcasters has posted the approximate figures for the overall distribution costs,...
No, they didn't. P2P pushes some of the distribution cost from the originator into the network, and I don't see that this is accounted for at all. If things like Oprah-Skype at 242 Gbps become common, it will not be possible to ignore the distributed network costs.
He didn't really dump on AppleTV as a product. He just didn't like the 24 hour rental feature for movies.
Its biggest trick in my mind though you didn't see in the video - one little slider that takes you from the Optical to the Infrared and Microwave and X-Ray sky. Simply blew me away.
What about time ? Is there a means of moving forward and backwards in time ? (A lot of the interest in the Harvard Sky Patrol plate, for example, is that they sample the sky in the past.)
(There are Florence's in Florida, Georgia, California and for all I know every state in the Union.)
Since this particular Florence is the one in Italy, the laws on defamation are pretty different from the US. I would not trust any legal
analysis in Slashdot for any jurisdiction, but for Italy I would trust it even less than usual.
They also smashed the third stage of the Saturn V into the Moon for every Apollo after 13 IIRC, also as seismic probes. That had
considerably more kinetic energy than either the LEM upper stages or any of the recent impacts.
It wasn't just to test the seismometers, it was to map the interior of the Moon, once they found out that the Moon is seismically pretty quiet and doesn't have much in the way of Moonquakes. It was thus a very large scale example of the seismic prospecting that is done frequently in oil exploration.
Still there at
http://88.80.13.160/wiki/Wikileaks
Their DNS is, of course, another question.
This kinda makes me wonder if NASA and other space agencies purposely over-estimate the useful lives of their spacecraft.
I have been involved with space flight projects, and you always hope that they last "forever." However, that scares program offices and the budget types. So, you specify a short, sweet, do-able missions, get money for that, and, if you are successful, hope that you can get money to extend it. If you are not successful, well, then it didn't really matter, did it ?
The mission of Ulysses was to use a Jupiter gravity assist to go out of the plane of the solar system, and
thus observe the Sun from high solar latitudes. It fulfilled that mission and lasted long enough to observe both
the North and South poles of the Sun. I would say it was fully successful.
It is not uncommon for the death of old spacecraft to be messy or even sloppy - the Viking 1 lander was killed by a programming bug -
but that does not detract from their earlier successes.
if i open an ftp clear text password, it is natively encrypted by the protocol? or did i just hand everyone my ftp password?
If you use ftp or telnet, you should assume that everyone has your password, period (unless you do it over a VPN tunnel). Don't trust others to magically do your security for you.
I use Sprint EVD0, and I assume that it is just as open as the WiFi at Starbucks. But then, I also assume the same about my Cable Modem.
I have Sprint EVD0, and I really like it. (I signed up for the all you can eat service, so I don't have to worry about being nickeled and dimed to death.) It is not as fast as my home (Cable modem) service, but I can routinely get 250 Kbps streaming video, generally get 500 Kbps video, and occasionally get 1 Mbps video. I generally use it in hotels, for example, instead of the typical $ 10 / day hotel Internet charge, and I also use it around the house in places where the WIFI is sketchy.
Would I give up my Cable Internet ? If I didn't run a SOHO with heavy data transfer needs, I might. Your needs might vary, so you might consider it. (Another issue is that it would really take 2 accounts, one for me, one for the house, and since the prices are comparable the second account might as well be wireline.)
The satellite that was shot down yesterday was very, very close to the Earth's atmosphere. It was only one rotation, maybe less, away from starting to graze it (which means that it would slow down and begin to reenter and burn up). If we assume that when it was destroyed, pieces flew in all directions, some of them would have ended up with a greater net orbital velocity at the end. These pieces aren't the ones that exploded *up* (normal to the surface of the Earth), though, they're the ones that exploded *forward* (in the direction of the satellite's motion). They picked up some velocity and would end up in a slightly higher orbit as a result. I suspect it's not much of a higher orbit, though -- if anything, it probably just means they'll take a little longer to hit the atmosphere than other parts. It's tough to say without doing any calculations, but I doubt you have enough Delta-V to push the pieces into a long-term stable orbit. (Unless maybe the rocket fuel detonated.) The difference in velocities between high, long-term stable orbits and low atmosphere-grazing orbits is pretty substantial.
Not quite. The orbit of a body is determined by it's position and velocity. In an intercept, you don't change the position, only the velocity, and so you move pieces to a new orbit that still intersects the point where the intercept occurred. (At least until drag perturbs the orbit more.) So, every piece, unless it reached escape velocity, will still come back to the location, and thus the altitude, where the intercept occurred. (Of course, the Earth is rotating, so I am talking about a space-fixed frame, not an Earth-fixed frame; the latitude and altitude will be the same, but the longitude will be different.)
The pieces that went forward gained velocity, and so raised their Apogee (180 degrees of orbital phase away). They will last until drag circularizes their orbit where it was before, then they will de-orbit shortly after. The pieces that went backwards lowered their velocity, and thus their perigee, and should reenter immediately, 1/2 orbit later. The pieces that went cross-track just changed their inclination, and so they should also de-orbit, more or less on the original time-table. The pieces that went radially also changed their perigee or apogee, but not by much (radial orbit changes are much less efficient at changing eccentricity than along track ones), so they will keep to something like the original time table too.
So, your conclusion is still correct -all of the pieces will de-orbit relatively fast, unless they escaped the Earth's pull entirely. And, the Chinese satellite intercept, because the satellite was in a fairly high orbit, many of the pieces are in stable orbits, at least from drag. They are still sensitive to solar radiation effects (direct thrust, reflection, the Earth's thermal radiation, and the Yarkovsky effect of their thermal radiation ) which (because small pieces tend to have small mass to area ratios) tends to de-orbit small pieces of junk over months even in otherwise stable orbits.
During the "shoot down" period it will be daytime in Hawaii and the Moon will be below the horizon. I don't think that the eclipse is a factor here.
I hate the term "shoot down." Everything will still be in orbit, just in smaller pieces.