Viewing profile — mchouza

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…

Probably just converted from 1500 km.

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 …

Many theoretical and experimental studies were done. One example from the early 70s is http://ipnpr.jpl.nasa.gov/progress_report2/II/IIO.PDF

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…

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 transm…

Photons are generally considered to be their own antiparticles: http://van.physics.illinois.edu/qa/listing.php?id=27107

Japan has more than 1000 kg of HEU: http://www.nti.org/analysis/articles/civilian-heu-japan/

He is the first author cited in their paper: http://www.witricity.com/pdfs/highly-resonant-power-transfer...

It's already public: http://www.dawn.com/news/1077275/nsa-tapped-into-undersea-ca...

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.

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…

https://www.google.com/patents/US4710876

You can launch from the ocean, though with more limitations: http://en.wikipedia.org/wiki/Sea_Launch

Maxwell didn't come up with anything himself [...] Maxwell "invented" the displacement current: http://en.wikipedia.org/wiki/Displacement_current

In the short run: - Ion thrusters are way simpler and they are trying to do something that is much easier. - Ion thrusters are relatively mature, working "fusors" don't exist. - Ex…

Yes, I agree. My point was that you cannot do substantially better than ion engines without having energy gain and, in fact, you are probably going to do much worse due to the weig…

Well, controlled fusion hasn't reached energy breakeven at all, even taking into account the kinetic energy of the reaction products. But the low thrust of current ion engines is m…

If fusion doesn't provide a substantial energy gain, it's not worth the effort. Existing ion thrusters are quite efficient (60+%) at translating electrical power to exhaust kinetic…

Project Orion was much more than science fiction ( http://www.scribd.com/doc/28668567/Nuclear-Pulse-Space-Vehic... ) though it was much less than operational. Very big Orion spaces…

Simulating explosions helps determine maintenance for nuclear warheads? It's not completely unreasonable: they need to validate the computational models that are used to check if a…

A more skeptical analysis by Phil Plait: http://blogs.discovermagazine.com/badastronomy/2011/10/17/di...

The basic idea is to ablate the asteroid to deflect it: https://e-reports-ext.llnl.gov/pdf/343984.pdf http://permalink.lanl.gov/object/tr?what=info:lanl-repo/lare...

There are some places in the "natural universe" that are colder than the CMB. That's because they aren't in equilibrium: http://en.wikipedia.org/wiki/Absolute_zero#Very_low_tempera…