At install time, the documentation says you can install XFS and reiserfs by:
boot: linux xfs
boot: linux reiserfs
reiserfs isn't compatible with selinux
Having a large continent at a pole is unusual anyway, Antartica used to be
near the equator but was moved by plate motion to it's current location
close enough to the south pole to have permanent ice 100 odd million
yrs ago to present. Before that the south pole was open ocean just like
the Arctic ocean is now and more of this water was in the ocean
instead of glacial ice.
The cheap oil is what you can easily pump out, there's lots of
fields that are left alone because at $26/barrel it wasn't worth
it. As the price and demand goes up, those older fields will
get revisited. But on a different idea, instead of working really
hard to pump out that last really sticky oil, would it be possible
to bio-engineer a bacteria that could partially digest thick
oil in place releasing methane or natural gas as a by product.
This would solve the problem of pumping it out since the
oil would stay in place and only the highly motile gas would
be taken. Of course you wouldn't want such a bacteria to be
able to live just anywhere since it might start eating
oil in other places. Maybe it could be engineered to only
like to multiply at very high pressure or in the presence
of some unusual trace gas that would only be injected at
these types of oil fields.
You make the assumption that the dust mote would actually stop,
only then would the bulk of the KE go into the target space ship. More
likely is that since the KE of each atom in the dust mote
is so much larger than the atomic bond energy holding the
grain together, the dust mote to the spacecraft really behaves
like a very densely packed bundle of cosmic rays. If the
spacecraft walls don't stop individual particles of that
energy (ie like cosmic ray protons) then it won't stop the
dust particle. The atoms would go in one side, out the
other radiating a small fraction of their relative energy
as gamma rays as cherenkov radiation and compton radiation.
The dust would go out the other side as a diverging cone shaped
spray of plasma.
I think you're talking about redial with an analog modem,
I was talking about turned the DSL modem connection on
and off. That way your system is only exposed to the net
when your DSL is on which is when you're actually using it.
Someone mentioned an advantage of dialup over broadband is that
you're not exposed to hacking when you have the modem hung up.
You can easily do the same with broadband, set your DSL for
manual connection. I use ipcop with DSL, when I decide to
use the internet I just go to the ipcop page and click the
connect button. That way the connection is severed when I'm
not actually using it, reconnecting over dsl only takes a few
seconds.
Mark
I'd think if the FBI wanted to get evidence on a suspected crook or
terrorist, they'd just park a guy across the street with a parabolic
mic or two. Since there's no physical tapping of the house or
any wires involved I'd guess there's no need for a court order even?
All the mic is doing is sniffing sounds in public, legally like
the way popparatzi (sp?) avoid legal problems photographing
stars in public. Also because of the illusion of privacy
the suspect would tend to talk more freely avoiding
the fact that criminals tend to not talk freely on possibly
tapped lines.
113 AU close enough to detect the frame dragging?
on
Deep in the Core
·
· Score: 2, Interesting
17 light hours is roughly 113 AUs, if the star passes that close
to the black hole, I wonder if the line of the node of the orbit
will precess forward enough to measure due to the frame dragging
from the spin of the black hole. That would also help prove
it's a black hole. The spin of the black hole should be pretty
fast since if formed by capturing matter in orbit.
The Einstein "Gravity Probe B" tried to measure the
same affect in earth orbit but it's so tiny in the Earth's
case, a 2 Million Ms black hole would have a big frame
drag effect. I guess it comes down to whether the star
gets close enough and long enough to get dragged much.
http://einstein.stanford.edu/
Mark
the article specifically says:
"Astronomers now know the event took place on the outskirts of a faraway galaxy, a location where old stellar remnants like neutron stars are known to reside."
'Faraway galaxy' doesn't sound like it was our galaxy
RE: terrorists threatening to kill passengers to get in cockpit.
I wonder if the pilot/co-pilot could put on their O2 masks in that
type of situation and lower the cabin pressure. At a certain pressure
everyone including the terrorists would pass out but it would not be
fatal. They could then disarm and restrain the terrorists and put
the pressure back to normal. It's pretty unlikely the terrorists would
have a O2 bottle and regulator in their carryon luggage. Of course this
assumes the drop down masks in the main cabin can be turned off from the
cockpit.
People will probably invent a variation of the umbrella hat made of tin foil. The cell phone antenna will be on the top and rest of the phone on your belt. You'd talk through a micro/earphone headset. But then the huge increase in lightning strike deaths and the anti-chick magnet affect of walking around with a aerial topped umbrella hat will cause a near extinction of the human race.
If anyone's interested,
Using fission boosting can raise that 20% to about 40% (looking farther down in that same article), but that's not techically pure fission
The wobble method of planet detection is more effective for lower mass stars. A planet of a given mass will move a smaller M star more than a bigger G star like the Sun. Plus on top of that, only 8% of stars in the galaxy are G class or bigger, so as we look outwards the closest stars tend to be M and K which biases the planet finds to lower mass stars. If you use the occulation method (the planet covers part of the star as it passes between us and the star), again in the M star case, the planet would cover a bigger fraction of the star's area since the red dwarf is so small. If some alien astronomer looked at the solar system and the earth passed in front of the Sun, the Earth would only cover 1/10000 th the area of the sun, but if earth orbited a red dwarf it would be more like 1/200 (0.5%) -- much easier to detect the change in light.
Mark
Remember, the 200 to 400 C temperature is at the point on the planet where the star is directly overhead. The dark side is really cold, so there's going to be a ring shaped region on the lit side just inside the terminator where the temperatures are liveable. That's if the atmosphere doesn't completely freeze on the dark side which would be a problem.
Plus if power really gets tight, we'll just loosen up the ridiculously stringent anti-nuke laws and hopefully start building integral fast reactors out the wazoo. IFR should solve the Yucca flats problem (no long-term storage needed since IFR burns it all up to short term nucleotides), proliferation (IFR material is nearly impossible to convert to weapons material due to comingling of isotopes) and fuel shortage (burns nearly anything, decommisioned weapons material, natural material, etc). Even better not only does it get rid of high grade weapons material for good but you get the energy out in the process. http://www.answers.com/topic/integral-fast-reactor
The big killer of sea life isn't the prompt gamma rays but the destruction of the ozone layer by the various oxides of nitrogen that the flash produces plus there's immediate destruction of ozone by the gamma rays. Higher UV damages the land and low water depth ecosphere so the deep sea animals get less food (since most of their food filters down from surface water and land run off). Also, after the prompt gamma and X-ray flash there's a chance of a period of higher than normal cosmic rays from the explosion. Since some of those particles have charge, galactic and earth magnetic fields can bend them around (which is how they last a while, they travel a longer distance) to hit from any direction and delayed by enough time for the earth to rotate enough that the shadowing effect doesn't help. This page also explains that there's not just gamma rays but muons, these can penetrate many hundreds of meters of water and rock:
http://www.exn.ca/Html/Templates/topicpage.cfm?ID= 19980713-60&Topic=Dinosaur
So suppose the dust is dangerous, which it may be, why are we assuming the people on the moon would ever have to breath it? What you do is design your space suits like the Russians do, they have a hatch built into the back. So when you need to come in from outside, you don't go in an airlock with your dusty suit and then come in the space habitat getting dust all over the inside-- you go in an external room and dock the hatch to the habitat and climb out of the suit. This way the dust can't get in.
Mark
Since they keep pressing the paramagnetic limit, at what point will you write a file, go on your way for a few months and come back to find the file unreadable? Will drives get to the point where the firmware will need to boost files once and a while (read the file, save it somewhere safe then rewrite it to disk to restrengthen the bits on the platter).
I've already had this happen with really old floppies (ie the files were unreadable but I think in that case I couldn't even reformat it and reuse it.. the material itself goes bad.
Re:Stratellite is the wave of the future...
on
Broadband Bits
·
· Score: 1
I don't get how the use of radio waves matters,
the only thing hurting the speed is the extra
distance involved with satellite. The
fact it's radio doesn't matter since radio
goes at light speed. Actually the radio signal's
in vacuum most of the path so it's actual faster
propagating a signal via radio than say optically
down a fiber that has some index of refraction > 1
Slashdot Mirror
Well, ok but you literally said "You cannot install .." meaning it's
not possible. That's a long way from just not being user friendly.
At install time, the documentation says you can install XFS and reiserfs by: boot: linux xfs boot: linux reiserfs reiserfs isn't compatible with selinux
Having a large continent at a pole is unusual anyway, Antartica used to be near the equator but was moved by plate motion to it's current location close enough to the south pole to have permanent ice 100 odd million yrs ago to present. Before that the south pole was open ocean just like the Arctic ocean is now and more of this water was in the ocean instead of glacial ice.
"Actually this is not entirely accurate. Nuclear energy is not really portable." That's why you build more than one :)
Ok, now explain how a few feet of increase in sea level will make the Earth so uninhabitable that a new planet is needed?
The cheap oil is what you can easily pump out, there's lots of fields that are left alone because at $26/barrel it wasn't worth it. As the price and demand goes up, those older fields will get revisited. But on a different idea, instead of working really hard to pump out that last really sticky oil, would it be possible to bio-engineer a bacteria that could partially digest thick oil in place releasing methane or natural gas as a by product. This would solve the problem of pumping it out since the oil would stay in place and only the highly motile gas would be taken. Of course you wouldn't want such a bacteria to be able to live just anywhere since it might start eating oil in other places. Maybe it could be engineered to only like to multiply at very high pressure or in the presence of some unusual trace gas that would only be injected at these types of oil fields.
You make the assumption that the dust mote would actually stop, only then would the bulk of the KE go into the target space ship. More likely is that since the KE of each atom in the dust mote is so much larger than the atomic bond energy holding the grain together, the dust mote to the spacecraft really behaves like a very densely packed bundle of cosmic rays. If the spacecraft walls don't stop individual particles of that energy (ie like cosmic ray protons) then it won't stop the dust particle. The atoms would go in one side, out the other radiating a small fraction of their relative energy as gamma rays as cherenkov radiation and compton radiation. The dust would go out the other side as a diverging cone shaped spray of plasma.
I think you're talking about redial with an analog modem, I was talking about turned the DSL modem connection on and off. That way your system is only exposed to the net when your DSL is on which is when you're actually using it.
Someone mentioned an advantage of dialup over broadband is that you're not exposed to hacking when you have the modem hung up. You can easily do the same with broadband, set your DSL for manual connection. I use ipcop with DSL, when I decide to use the internet I just go to the ipcop page and click the connect button. That way the connection is severed when I'm not actually using it, reconnecting over dsl only takes a few seconds. Mark
I'd think if the FBI wanted to get evidence on a suspected crook or terrorist, they'd just park a guy across the street with a parabolic mic or two. Since there's no physical tapping of the house or any wires involved I'd guess there's no need for a court order even? All the mic is doing is sniffing sounds in public, legally like the way popparatzi (sp?) avoid legal problems photographing stars in public. Also because of the illusion of privacy the suspect would tend to talk more freely avoiding the fact that criminals tend to not talk freely on possibly tapped lines.
17 light hours is roughly 113 AUs, if the star passes that close to the black hole, I wonder if the line of the node of the orbit will precess forward enough to measure due to the frame dragging from the spin of the black hole. That would also help prove it's a black hole. The spin of the black hole should be pretty fast since if formed by capturing matter in orbit. The Einstein "Gravity Probe B" tried to measure the same affect in earth orbit but it's so tiny in the Earth's case, a 2 Million Ms black hole would have a big frame drag effect. I guess it comes down to whether the star gets close enough and long enough to get dragged much. http://einstein.stanford.edu/ Mark
the article specifically says: "Astronomers now know the event took place on the outskirts of a faraway galaxy, a location where old stellar remnants like neutron stars are known to reside." 'Faraway galaxy' doesn't sound like it was our galaxy
RE: terrorists threatening to kill passengers to get in cockpit. I wonder if the pilot/co-pilot could put on their O2 masks in that type of situation and lower the cabin pressure. At a certain pressure everyone including the terrorists would pass out but it would not be fatal. They could then disarm and restrain the terrorists and put the pressure back to normal. It's pretty unlikely the terrorists would have a O2 bottle and regulator in their carryon luggage. Of course this assumes the drop down masks in the main cabin can be turned off from the cockpit.
People will probably invent a variation of the umbrella hat made of tin foil. The cell phone antenna will be on the top and rest of the phone on your belt. You'd talk through a micro/earphone headset. But then the huge increase in lightning strike deaths and the anti-chick magnet affect of walking around with a aerial topped umbrella hat will cause a near extinction of the human race.
If anyone's interested, Using fission boosting can raise that 20% to about 40% (looking farther down in that same article), but that's not techically pure fission
The wobble method of planet detection is more effective for lower mass stars. A planet of a given mass will move a smaller M star more than a bigger G star like the Sun. Plus on top of that, only 8% of stars in the galaxy are G class or bigger, so as we look outwards the closest stars tend to be M and K which biases the planet finds to lower mass stars. If you use the occulation method (the planet covers part of the star as it passes between us and the star), again in the M star case, the planet would cover a bigger fraction of the star's area since the red dwarf is so small. If some alien astronomer looked at the solar system and the earth passed in front of the Sun, the Earth would only cover 1/10000 th the area of the sun, but if earth orbited a red dwarf it would be more like 1/200 (0.5%) -- much easier to detect the change in light. Mark
Remember, the 200 to 400 C temperature is at the point on the planet where the star is directly overhead. The dark side is really cold, so there's going to be a ring shaped region on the lit side just inside the terminator where the temperatures are liveable. That's if the atmosphere doesn't completely freeze on the dark side which would be a problem.
the movie was A.I. by Spielberg.
Plus if power really gets tight, we'll just loosen up the ridiculously stringent anti-nuke laws andr
hopefully start building integral fast reactors out the wazoo. IFR should solve the Yucca flats problem (no long-term storage needed since IFR burns it all up to short term nucleotides), proliferation (IFR material is nearly impossible to convert to weapons material due to comingling of isotopes) and fuel shortage (burns nearly anything, decommisioned weapons material, natural material, etc). Even better not only does it get rid of high grade weapons material for good but you get the energy out in the process.
http://www.answers.com/topic/integral-fast-reacto
Mark
answer: what do these people expect, they're living in a desert?
The big killer of sea life isn't the prompt gamma rays but the destruction of the ozone layer by the various oxides of nitrogen that the flash produces plus there's immediate destruction of ozone by the gamma rays. Higher UV damages the land and low water depth ecosphere so the deep sea animals get less food (since most of their food filters down from surface water and land run off). Also, after the prompt gamma and X-ray flash there's a chance of a period of higher than normal cosmic rays from the explosion. Since some of those particles have charge, galactic and earth magnetic fields can bend them around (which is how they last a while, they travel a longer distance) to hit from any direction and delayed by enough time for the earth to rotate enough that the shadowing effect doesn't help. This page also explains that there's not just gamma rays but muons, these can penetrate many hundreds of meters of water and rock: http://www.exn.ca/Html/Templates/topicpage.cfm?ID= 19980713-60&Topic=Dinosaur
So suppose the dust is dangerous, which it may be, why are we assuming the people on the moon would ever have to breath it? What you do is design your space suits like the Russians do, they have a hatch built into the back. So when you need to come in from outside, you don't go in an airlock with your dusty suit and then come in the space habitat getting dust all over the inside-- you go in an external room and dock the hatch to the habitat and climb out of the suit. This way the dust can't get in. Mark
Since they keep pressing the paramagnetic limit, at what point will you write a file, go on your way for a few months and come back to find the file unreadable? Will drives get to the point where the firmware will need to boost files once and a while (read the file, save it somewhere safe then rewrite it to disk to restrengthen the bits on the platter). I've already had this happen with really old floppies (ie the files were unreadable but I think in that case I couldn't even reformat it and reuse it.. the material itself goes bad.
Yet another way to destroy the earth: http://chess.captain.at/strangelets-faq.html
I don't get how the use of radio waves matters, the only thing hurting the speed is the extra distance involved with satellite. The fact it's radio doesn't matter since radio goes at light speed. Actually the radio signal's in vacuum most of the path so it's actual faster propagating a signal via radio than say optically down a fiber that has some index of refraction > 1