The moon is already full of large open pit mines. Theyre called craters. If youve ever visited an open pit mine, youll notice that is much like a crater. Second, can you see any craters on the moon with the unaided eye? no. Go out and look tonight. The only thing you can se are the Mares, which are not craters.
Right, but the cost is trivial if you want the material you mine to remain in space,, say for building a space station, or an industrial complex to process all your metal so you can actually build stuff out of it.
Im a grad student in Aerospace engineering, and I frequently have to solve Computational Fluid Dynamics problems. I typically use three programs. For solving symbolic equations, i use Mathematica, For plotting and post processing I typically use Matlab, and for the actual calculations, I use Fortran 77. Fortran sucks for plotting stuff, and it cant do symbolic calculation. Matlab rocks at plotting, but is slow in the calculation department. It has limited symbolic calculation ability. Mathematica tends to be cumbersome in plotting numerical stuff, but it rocks at solving symbolic problems.
I dont know if I buy that. If youve ever cooked a ham (or other pork product) juices come out when you cook them. If anything, lack of juices would indicate to me that it was cooked outside the can and then packaged.
There are certain things that only Govt's are equipped to do, that no private industry can do. Say you went to a VC looking for some money for a new space venture. VC's demand a 60-100% return per year. In other words, they want your new space company to be worth upwards of $100 Million within 5 years. Maybe you can do it, maybe you cant, but NO VC will believe you at this point, because too many have gone before you and failed. Basic reaserch in space is too expensive for private industry to undertake at this point, and has too little payoff. Things are looking up for the satellite launch market and the satellite end of the market. But there is not yet a market for humans in spacce. Why should we keep doing what we are then? The simple reason that transportation systems lead to development. If suddenly a cheap transportation system were found to get into space, we would have an awsome space development market. But there isnt now, and getting one takes research and development, which weve already established is too expensive for the private sector.
Its just that most journalists dont understand scientific uncertainty or getting all the facts before reaching a conclusion. Time and again NASA has said that they dont know what caused the shuttle to break up for the simple reason that they dont KNOW for sure what caused the shuttle to break up. They know it had something to do with the left wing, and they know that foam hit the left wing. They dont have the "smoking gun" that connects the two causally. While the media may be willing to jump to that conclusion, NASA isnt because there is not enough evidence to draw that conclusion.
DVD-A and SACD will never become popular, except perhaps among audiophiles. Avoiding the quality debate and assuming that the quality is slightly higher (good enough that audiophiles will buy, but not most people) There simply arent enough songs that most bands put out to make it worthwhile to put out a DVD vs a CD. You can fit ~ 8 CD's on a DVD. Assuming 2x the data for higher quality, thats still 4 CD's worth of music, or about 40-60 songs. Say there are 50 songs on a new DVD. How many bands have 50 songs in their entire catalog? Even the beatles have only about 200 songs, thats 4 DVD releases. How will record companies make money with only one release for a band? theyll either have to underutelize the capcity of the DVD or raise prices. If you only put 15 songs on it, nobody will buy it because a CD will do the same, and youd have to buy a new player. The only hope would be to put 15 songs with say 5 music videos on one disc. Even then you still have the problem of how many bands make 5 music videos for every 15 songs? Higher capacity discs just arent needed, not when you can put 1000 songs of approximately CD quality on an iPod.
My point wasnt that there is no way around it. There have been ways around read-only since you put a little electrical tape over the cutout on a floppy disk. My point was that what MS is doing is not something new and sinister as the original article suggests. Other companies have "read only" products.
Thats why I bank at Farmers State bank of Hamel (Hamel MN) Their "corporate office" is literally down the street from me, so if i ever have a problem, theyre very responsive (i know where most of the tellers live;-) Small town banks genrally are more responsive and screw you less than the big guys. Fewer phone solicitations too. They also give out useful things like pot holders and spatulas every so often.
So basically what theyre doing is including the ability to make documenst read only, read/write etc. How is this any different than say acrobat documents? I cant weite a pdf file when i open it, at least not with the reader, I cant save it, I can pretty much only look at it. Thats all that MS is doing from the sounds of it
If theyre travelling in the same direction, youre right, but im assuming a 90 degree impact angle relative to the crafts velocity. If they hit head on, its actually much much worse, since the closing velocity is more like 15000 m/s instead of 7600, and since velocity is squared, mass equivalent at 60 mph is 4 times as much.
Remember, the energy a moving mass has (kinetic energy) is defined as: Kinetic Energy = 1/2 * mass * velocity ^ 2
um, its a bit more dramatic than that. You should recheck your calculations. 60 mph is about 26 m/s, orbital speed is approximately 7600 m/s for a bolt mass of 50 g (.05 kg or about.11 lbs) the kinetic energy is roughly equivalent to 4000 kg at 60 mph or about 8 tons ( in lbs tons) so imagine getting hit by an 8 ton truck that has the cross section of a bee. It would go right through a space shuttle or anything inbetween.
Yes, great idea, and why dont we travel the second half of a journey first, because that way we get there faster and dont have to go through the first part. You need to get into LEO if you want to go anywhere in the solar system other than earth.
it should wait until we have enough in the way of manned orbital stations to justify the cost
Transportation systems come first, then comes money making. If we wated to have a global system of communications satellites before launching rockets, we wouldnt have any system. In the rainforest, roads come first then the settlers and lumberjacks. If you ever fly across america you can see little strings of towns founded along sometimes now extinct railroad lines. Urban sprawl is a result of increased roadbuilding and major interstates. When the first interstates were built they were mostly empty. Theres a story i heard about some family that was lost on the Washington DC beltway and just made a U-turn in the middle of it because there was no traffic. Try that today. Transportation systems are the ultimate "if you build it, they will come" phenomenon. Private companies wont pay for it, private companies want a 5 year break even with a 30% rate of return. Good luck on even getting the thing built in 5 years, let alone getting it to break even. There are some things only govt can do because buisness is always looking at next quarters bottom line and not the bottom line 10 years from now.
The spinning of the earth has nothing to do with the cable being taught. The cables center of gravity is in a geostationary orbit over some point on the earths equator, just like a communications satellite. The cable is taught because the half above geostationary orbit is moving faster than orbital velocity and is trying to be flung into space (causing tension) the half below is moving slower than orbital velocity and is trying to fall to earth (causing more tension)
absolutely not true. the elevator is in orbit around the earth just like the moon or any other satellite. the center of gravity of the elevator is in geosynchronous orbit (36000 km or 6.6 ER) Geosynchronous orbit has an orbital period the same as the rotation rate of the earth. A geostationary earth has a period of 24 hours and coincides with one spot on the earths surface. In other words, anything in that orbit will remain over the exact same spot essentially forever. The elevator goes into a geostationary orbit. Since its long, they can put the cable down anywhere within a 45 degree arc. The only thing you need an anchor for is to keep track of the cable. The greatest tension on the cable is at its center of gravity, because at that point, half the cable above it is centripetally trying to be flung into space, and the other half is trying to fall down to the earth. But this is located in geostationary orbit. Theres little if any tension on the cable at ground level.
The only problem is that what people think is historically significant, usually isnt significant to historians. The most information about a people is found in garbage dumps of ancient civilizations. Who knows what future historians will want to look at
Ive found that most people who resort to petty name calling dont have any real valid arguments for or against a topic. Add to that the fact that my post was a joke.
Anyone who buys this book will probably get arrested under the patriot act, because the govt will think you want to know how to make an atomic bomb. God help the author.
I had a hardware problem with my imac, and I took it into an apple store to get fixed, while there I witnessed an apple store employee calling up an ISP on behalf of a customer and asking "if they could fix the problem that our mutual customer has" since the ISP was using some software incompatible with the airport base station.
After transaction is complete, all bank knows is that $100 is gone from John Smith's account and given to ATM 385. All ATM 385 remembers is that it loaded $100 onto card #12345. It doesn't remember the account it was originally taken from. Does this make sense?
still not secure. The bank knows it transferred the money from John Smiths account at 10:45:42 To ATM 385. The ATM knows it transferred $ 100 to card 12345 at 10:45:43. Since there were no transfers at ATM 385 between 10:45:42 and 10:45:43, it can be inferrred that the money in card 12345 is from john smiths account.
2 failures in 107 flights. By comparison, conventionaly aircraft have about 1 failure in 100000+ flights (typically 1 major disaster a year) But in the shuttles defense, jet aircraft are moving like snails and shuttles are travelling like indy cars. If normal people drove at 230 mph, youd expect alot more car crashes and a heck of alot more deaths. Shuttles travel 25-30 times faster than a jet aircraft, so you would logically expect alot more fatal incidents. In this case about 3 orders of magnitude more fatal incidents than a conventional jet. Fatalities increase with the 2.5th power of speed in aircraft.
I hate to say this, but its not the people, its the money. A space shuttle costs ~ 3.5 billion to reconstruct, and that was when they originally constructed them. Now they would not only have to restart the factories that made the parts, to some extent they would have to redesign the parts them selves. In comparison, a wooden ship to sail to america was expensive, but it wasnt taxpayer funded. If this were a private shuttle, I dont think as much of a deal would have been made about it.
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The moon is already full of large open pit mines. Theyre called craters. If youve ever visited an open pit mine, youll notice that is much like a crater. Second, can you see any craters on the moon with the unaided eye? no. Go out and look tonight. The only thing you can se are the Mares, which are not craters.
Right, but the cost is trivial if you want the material you mine to remain in space,, say for building a space station, or an industrial complex to process all your metal so you can actually build stuff out of it.
Im a grad student in Aerospace engineering, and I frequently have to solve Computational Fluid Dynamics problems. I typically use three programs. For solving symbolic equations, i use Mathematica, For plotting and post processing I typically use Matlab, and for the actual calculations, I use Fortran 77. Fortran sucks for plotting stuff, and it cant do symbolic calculation. Matlab rocks at plotting, but is slow in the calculation department. It has limited symbolic calculation ability. Mathematica tends to be cumbersome in plotting numerical stuff, but it rocks at solving symbolic problems.
I dont know if I buy that. If youve ever cooked a ham (or other pork product) juices come out when you cook them. If anything, lack of juices would indicate to me that it was cooked outside the can and then packaged.
There are certain things that only Govt's are equipped to do, that no private industry can do. Say you went to a VC looking for some money for a new space venture. VC's demand a 60-100% return per year. In other words, they want your new space company to be worth upwards of $100 Million within 5 years. Maybe you can do it, maybe you cant, but NO VC will believe you at this point, because too many have gone before you and failed. Basic reaserch in space is too expensive for private industry to undertake at this point, and has too little payoff. Things are looking up for the satellite launch market and the satellite end of the market. But there is not yet a market for humans in spacce. Why should we keep doing what we are then? The simple reason that transportation systems lead to development. If suddenly a cheap transportation system were found to get into space, we would have an awsome space development market. But there isnt now, and getting one takes research and development, which weve already established is too expensive for the private sector.
Its just that most journalists dont understand scientific uncertainty or getting all the facts before reaching a conclusion. Time and again NASA has said that they dont know what caused the shuttle to break up for the simple reason that they dont KNOW for sure what caused the shuttle to break up. They know it had something to do with the left wing, and they know that foam hit the left wing. They dont have the "smoking gun" that connects the two causally. While the media may be willing to jump to that conclusion, NASA isnt because there is not enough evidence to draw that conclusion.
DVD-A and SACD will never become popular, except perhaps among audiophiles. Avoiding the quality debate and assuming that the quality is slightly higher (good enough that audiophiles will buy, but not most people) There simply arent enough songs that most bands put out to make it worthwhile to put out a DVD vs a CD. You can fit ~ 8 CD's on a DVD. Assuming 2x the data for higher quality, thats still 4 CD's worth of music, or about 40-60 songs. Say there are 50 songs on a new DVD. How many bands have 50 songs in their entire catalog? Even the beatles have only about 200 songs, thats 4 DVD releases. How will record companies make money with only one release for a band? theyll either have to underutelize the capcity of the DVD or raise prices. If you only put 15 songs on it, nobody will buy it because a CD will do the same, and youd have to buy a new player. The only hope would be to put 15 songs with say 5 music videos on one disc. Even then you still have the problem of how many bands make 5 music videos for every 15 songs? Higher capacity discs just arent needed, not when you can put 1000 songs of approximately CD quality on an iPod.
My point wasnt that there is no way around it. There have been ways around read-only since you put a little electrical tape over the cutout on a floppy disk. My point was that what MS is doing is not something new and sinister as the original article suggests. Other companies have "read only" products.
Thats why I bank at Farmers State bank of Hamel (Hamel MN) Their "corporate office" is literally down the street from me, so if i ever have a problem, theyre very responsive (i know where most of the tellers live ;-) Small town banks genrally are more responsive and screw you less than the big guys. Fewer phone solicitations too. They also give out useful things like pot holders and spatulas every so often.
So basically what theyre doing is including the ability to make documenst read only, read/write etc. How is this any different than say acrobat documents? I cant weite a pdf file when i open it, at least not with the reader, I cant save it, I can pretty much only look at it. Thats all that MS is doing from the sounds of it
If theyre travelling in the same direction, youre right, but im assuming a 90 degree impact angle relative to the crafts velocity. If they hit head on, its actually much much worse, since the closing velocity is more like 15000 m/s instead of 7600, and since velocity is squared, mass equivalent at 60 mph is 4 times as much.
I nominate them for an ig-nobel prize
Kinetic Energy = 1/2 * mass * velocity ^ 2
um, its a bit more dramatic than that. You should recheck your calculations. 60 mph is about 26 m/s, orbital speed is approximately 7600 m/s for a bolt mass of 50 g (.05 kg or about .11 lbs) the kinetic energy is roughly equivalent to 4000 kg at 60 mph or about 8 tons ( in lbs tons) so imagine getting hit by an 8 ton truck that has the cross section of a bee. It would go right through a space shuttle or anything inbetween.
it should wait until we have enough in the way of manned orbital stations to justify the cost
Transportation systems come first, then comes money making. If we wated to have a global system of communications satellites before launching rockets, we wouldnt have any system. In the rainforest, roads come first then the settlers and lumberjacks. If you ever fly across america you can see little strings of towns founded along sometimes now extinct railroad lines. Urban sprawl is a result of increased roadbuilding and major interstates. When the first interstates were built they were mostly empty. Theres a story i heard about some family that was lost on the Washington DC beltway and just made a U-turn in the middle of it because there was no traffic. Try that today. Transportation systems are the ultimate "if you build it, they will come" phenomenon. Private companies wont pay for it, private companies want a 5 year break even with a 30% rate of return. Good luck on even getting the thing built in 5 years, let alone getting it to break even. There are some things only govt can do because buisness is always looking at next quarters bottom line and not the bottom line 10 years from now.
The spinning of the earth has nothing to do with the cable being taught. The cables center of gravity is in a geostationary orbit over some point on the earths equator, just like a communications satellite. The cable is taught because the half above geostationary orbit is moving faster than orbital velocity and is trying to be flung into space (causing tension) the half below is moving slower than orbital velocity and is trying to fall to earth (causing more tension)
absolutely not true. the elevator is in orbit around the earth just like the moon or any other satellite. the center of gravity of the elevator is in geosynchronous orbit (36000 km or 6.6 ER) Geosynchronous orbit has an orbital period the same as the rotation rate of the earth. A geostationary earth has a period of 24 hours and coincides with one spot on the earths surface. In other words, anything in that orbit will remain over the exact same spot essentially forever. The elevator goes into a geostationary orbit. Since its long, they can put the cable down anywhere within a 45 degree arc. The only thing you need an anchor for is to keep track of the cable. The greatest tension on the cable is at its center of gravity, because at that point, half the cable above it is centripetally trying to be flung into space, and the other half is trying to fall down to the earth. But this is located in geostationary orbit. Theres little if any tension on the cable at ground level.
The only problem is that what people think is historically significant, usually isnt significant to historians. The most information about a people is found in garbage dumps of ancient civilizations. Who knows what future historians will want to look at
Ive found that most people who resort to petty name calling dont have any real valid arguments for or against a topic. Add to that the fact that my post was a joke.
Anyone who buys this book will probably get arrested under the patriot act, because the govt will think you want to know how to make an atomic bomb. God help the author.
I had a hardware problem with my imac, and I took it into an apple store to get fixed, while there I witnessed an apple store employee calling up an ISP on behalf of a customer and asking "if they could fix the problem that our mutual customer has" since the ISP was using some software incompatible with the airport base station.
This post is Rot 26 encrypted. Its unbreakable because the DMCA says its unbreakable.
still not secure. The bank knows it transferred the money from John Smiths account at 10:45:42 To ATM 385. The ATM knows it transferred $ 100 to card 12345 at 10:45:43. Since there were no transfers at ATM 385 between 10:45:42 and 10:45:43, it can be inferrred that the money in card 12345 is from john smiths account.
Heres the secret formula
first hit on google, you must not have checked very hard, or at all.
2 failures in 107 flights. By comparison, conventionaly aircraft have about 1 failure in 100000+ flights (typically 1 major disaster a year) But in the shuttles defense, jet aircraft are moving like snails and shuttles are travelling like indy cars. If normal people drove at 230 mph, youd expect alot more car crashes and a heck of alot more deaths. Shuttles travel 25-30 times faster than a jet aircraft, so you would logically expect alot more fatal incidents. In this case about 3 orders of magnitude more fatal incidents than a conventional jet. Fatalities increase with the 2.5th power of speed in aircraft.
I hate to say this, but its not the people, its the money. A space shuttle costs ~ 3.5 billion to reconstruct, and that was when they originally constructed them. Now they would not only have to restart the factories that made the parts, to some extent they would have to redesign the parts them selves. In comparison, a wooden ship to sail to america was expensive, but it wasnt taxpayer funded. If this were a private shuttle, I dont think as much of a deal would have been made about it.