mchouza
Joined 16 years ago
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346
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71
Member since
Jun 24
http://chouza.com.ar
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Comment · 2 years ago
They don't, see https://arxiv.org/abs/2309.07061 . The basic idea is to use "picosecond-level" synchronization to improve the signal-to-noise ratio. They mention that a truly phase-coherent swarm would perform much better but they consider that a longer term prospect (section 2.1.4).
Comment · 3 years ago
Probably just converted from 1500 km.
Comment · 7 years ago
I am quite confident all the current employees of OpenAI qualify as real people. They certainly have problems and probably a good share of those problems are "real" too.
Of course their priorities may be off and they could be open to be persuaded to work in a different direction. But I don't think that condescension would be very effective for that.
Comment · 10 years ago
Many theoretical and experimental studies were done. One example from the early 70s is http://ipnpr.jpl.nasa.gov/progress_report2/II/IIO.PDF
Comment · 10 years ago
That's true, but supersonic planes also travel higher (Concorde -> 18 km, XB-70 -> 22 km). The real problem is that L/D decreases at supersonic speeds. For example, the XB-70 had a L/D of about 7, while the 707 had a L/D over 18...
Comment · 11 years ago
It's mostly a question of power. The 1987 design for the TAU probe communication system would have handled 20 kb/s from 1000 AU... by using between 100 and 260 watts for the transmitter (and relatively big antennas):
Comment · 12 years ago
Photons are generally considered to be their own antiparticles: http://van.physics.illinois.edu/qa/listing.php?id=27107
Comment · 12 years ago
Japan has more than 1000 kg of HEU: http://www.nti.org/analysis/articles/civilian-heu-japan/
Comment · 12 years ago
He is the first author cited in their paper:
http://www.witricity.com/pdfs/highly-resonant-power-transfer...
Comment · 12 years ago
It's already public: http://www.dawn.com/news/1077275/nsa-tapped-into-undersea-ca...
Comment · 13 years ago
Oil can be produced synthetically: http://en.wikipedia.org/wiki/Fischer%E2%80%93Tropsch_process
Though the FT process is quite bad from a CO2 emissions POV.
Comment · 13 years ago
No, the algorithm as described is very different from binary multiplication. It requires a number of stones proportional to the result, while the number of bits required when doing binary multiplication is polylogarithmic.
It's a big difference: 1000 * 1000 would require 1000000 stones if done with the "Ehiopian algorithm", but it can be done with less than 1000 stones by using normal binary multiplication.
Comment · 13 years ago
Comment · 13 years ago
You can launch from the ocean, though with more limitations: http://en.wikipedia.org/wiki/Sea_Launch