Computer class in school, spring of 1959. Coded in Hex, 512 bytes of memory (recirculating drum), 32K mass storage that was so big one didn't know what to do with it. Solved differential equations, linear systems with rational coefficients, and computed root locus diagrams. When somebody came along to add an assembler I didn't see the point, as it wouldn't even let you use instructions as data, and made it more difficult to plan jumps to account for the rotation of the drum. If you used floating point you lost 128 bytes of the memory. It was a very different world.
But doesn't it seem a little strange? The escape velocity is greater than the speed of light, but a particle falling in does not reach the speed of light (understandably). Maybe someone conversant in relativity can explain this.
Since the escape velocity from a black hole "exceeds" the speed of light, particles arriving at the event horizon have a lot of energy. The energy from these particles is enough for the creation of another universe. The space inside a black hole expands (in a direction orthogonal to our space dimensions) forming the big bang starting that universe.
If we assume c can be factored as a (a+2^k) then the resulting quadratic gives a = -2^{k-1} + sqrt(2^{2k-2}+c). Thus for such numbers that allow factoring in this form, one can search for the factors in time linear in the number of bits in c. (One just needs to check for 2^{2k-2} + c being a perfect square, for the various values of k.)
1958, ALWAC IIIE with 512 byes of memory in a recirculating drum. Huge mass storage of 32K bytes that could be loaded into the 512 bytes in blocks of 128 bytes. Software 32 bit floating point used up 128 bytes of the 512. A good system to learn some good habits and some terrible ones. Of course, there was no assembler at first, but once you learned the hex codes a later assembler forced one to do silly things like not use instructions for data so who needs a higher order language?
I've wondered why so few seem to pay attention to his ideas. He has offered the only explanation for the weirdness of quantum mechanics that makes any sense to me. See http://laputan.blogspot.com/2003_09_21_laputan_arc hive.html for Carver Mead's take on it. Fred
If this tech should enable a perfect lie detector it raises some interesting questions.
Should it be required in criminal cases? Required of those under suspicion of a criminal act? In civil suits? Of candidates applying for political office? Could employers use it in connection with workplace security? Etc., etc.
If it is noninvasive, easy, fast, and cheap, it it going to be difficult to draw the line.
In Michigan a man was arrested for having sex with hios girlfriends dead dog in full view of a preschool, but I don't expect that to be on slashdot either.
At http://mathalacarte.com/ a library of mathematical software developed at JPL and heavily used there is available. Software may or no be free depending on the use.
You young whippersnappers have it so easy. The ALWAC IIIE had 512 bytes of memory and 32K of drum storage. So much that one wonder what one could do with it all. When someone finally introduced an assembler, I wondered why? The assembler wouldn't let you use the same storage for instructions and data and made it difficult to access memory in an optimal way. (The memory was interleaved on the drum, and if the memory was in the wrong place it was a long wait to access it.) There was floating point, but that of course was software thus using it meant giving up 128 bytes of that valuable memory.
I was solving differential equations, getting rational solutions to linear systems with rational coefficients, and getting root locus plots on this wonderful machine. (I don't want to go back!) Fred
Dr. Les Hatton has written quite a bit about the disadvantages of OOP, or to be more precise, of C++. A colleague of mine attended a conference where he gave results from an investigation of a large number of projects, including some large one. Languages used included C, C++, Ada, and Fortran. Maintenance costs were the same for all languages except for C++ where the costs tended to be 3 times greater. Note that Dr. Hatton is a highly respected research worker in this field.
Slashdot Mirror
Computer class in school, spring of 1959. Coded in Hex, 512 bytes of memory (recirculating drum), 32K mass storage that was so big one didn't know what to do with it. Solved differential equations, linear systems with rational coefficients, and computed root locus diagrams. When somebody came along to add an assembler I didn't see the point, as it wouldn't even let you use instructions as data, and made it more difficult to plan jumps to account for the rotation of the drum. If you used floating point you lost 128 bytes of the memory. It was a very different world.
Terminal velocity as you describe it is caused by drag. Drag has nothing to do with the escape velocity from a black hole.
But doesn't it seem a little strange? The escape velocity is greater than the speed of light, but a particle falling in does not reach the speed of light (understandably). Maybe someone conversant in relativity can explain this.
If the particles were at the speed of light that would be infinity watts, whatever that means.
Since the escape velocity from a black hole "exceeds" the speed of light, particles arriving at the event horizon have a lot of energy. The energy from these particles is enough for the creation of another universe. The space inside a black hole expands (in a direction orthogonal to our space dimensions) forming the big bang starting that universe.
Using 4.0 on Gentoo for about a week now.
If we assume c can be factored as a (a+2^k) then the resulting quadratic gives a = -2^{k-1} + sqrt(2^{2k-2}+c). Thus for such numbers that allow factoring in this form, one can search for the factors in time linear in the number of bits in c. (One just needs to check for 2^{2k-2} + c being a perfect square, for the various values of k.)
So where is the two bit difference?
1958, ALWAC IIIE with 512 byes of memory in a recirculating drum. Huge mass storage of 32K bytes that could be loaded into the 512 bytes in blocks of 128 bytes. Software 32 bit floating point used up 128 bytes of the 512. A good system to learn some good habits and some terrible ones. Of course, there was no assembler at first, but once you learned the hex codes a later assembler forced one to do silly things like not use instructions for data so who needs a higher order language?
HTTP://www.lapcfixer.com/
I have no connection other than being a very happy customer.
For those of you too young, a radio show called Captain Midnight was sponsored by Ovaltine, and featured decoders which they sold to kids.
"Mozilla Exec Claims Apple is Hunting OSS Browsers". Perhaps they could help Apple find one?
I've wondered why so few seem to pay attention to his ideas. He has offered the only explanation for the weirdness of quantum mechanics that makes any sense to me. See http://laputan.blogspot.com/2003_09_21_laputan_arc hive.html for Carver Mead's take on it.
Fred
If this tech should enable a perfect lie detector it raises some interesting questions.
Should it be required in criminal cases?
Required of those under suspicion of a criminal act?
In civil suits?
Of candidates applying for political office?
Could employers use it in connection with workplace security?
Etc., etc.
If it is noninvasive, easy, fast, and cheap, it it going to be difficult to draw the line.
Parent has it exactly right. My experience, and from what I've read from many others, is that the Gentoo community is extremely helpful and polite.
Also see http://science.slashdot.org/article.pl?sid=06/06/2 3/2226257
And in particular the comment by Ian Bicking which points to this article on the views of Carver Mead http://laputan.blogspot.com/2003_09_21_laputan_arc hive.html#106446538310636532
I found his views quit interesting.
Fred
At http://mathalacarte.com/ a library of mathematical software developed at JPL and heavily used there is available. Software may or no be free depending on the use.
You young whippersnappers have it so easy. The ALWAC IIIE had 512 bytes of memory and 32K of drum storage. So much that one wonder what one could do with it all. When someone finally introduced an assembler, I wondered why? The assembler wouldn't let you use the same storage for instructions and data and made it difficult to access memory in an optimal way. (The memory was interleaved on the drum, and if the memory was in the wrong place it was a long wait to access it.) There was floating point, but that of course was software thus using it meant giving up 128 bytes of that valuable memory.
I was solving differential equations, getting rational solutions to linear systems with rational coefficients, and getting root locus plots on this wonderful machine. (I don't want to go back!)
Fred
Dr. Les Hatton has written quite a bit about the disadvantages of OOP, or to be more precise, of C++. A colleague of mine attended a conference where he gave results from an investigation of a large number of projects, including some large one. Languages used included C, C++, Ada, and Fortran. Maintenance costs were the same for all languages except for C++ where the costs tended to be 3 times greater. Note that Dr. Hatton is a highly respected research worker in this field.
MindPixel seems to have much in common with Lenat's CYC (which is much further along). See here.