00N8

13 ms·

61.
by 00N8 2y ago
I think the math is fine, but a perfectly rigid rod cannot exist in our universe, so there's no paradox, even though it would let you send messages faster than light. It's like calculating how strong of a hydraulic press you'
62.
by 00N8 2y ago
One challenge I've heard of is: If you carry 100 tons of cargo from point A to point B in an airship, for the airship to return to point A, it needs to take on another 100 tons of new cargo (or ballast), or it needs to vent (or compres
63.
by 00N8 2y ago
Compressed hydrogen has low enough density that even at dangerously high pressures it would take up most of the luggage & passenger areas of a car, just to get mediocre range. Liquid hydrogen has better density (roughly 2x), but it&#x27
64.
by 00N8 2y ago
> You can exercise without changing your diet, but you won't loose (much) weight. Exercising without changing your diet is seriously nontrivial for most people, due to compensatory eating - if you burn an extra 400 kCal, you will li
65.
by 00N8 2y ago
Supersonic rounds make a distinctive noise that machines could reliably distinguish from fireworks (humans can learn to do this too). But distinguishing arbitrary subsonic ammo vs. arbitrary fireworks seems like it would be at least an ord
66.
by 00N8 2y ago
Tragic as it would be, that worst case global warming scenario is still more of a "set human population levels & quality of life back 200 years" situation, rather than a literal extinction event though. I see a lot of hyperbol
67.
by 00N8 2y ago
The first generation or two of Vipers were very raw & unrefined, with ~400 horsepower, no stability control, no anti-lock brakes, minimal safety features, cheap & janky looking interiors, etc. It sounds great to me (aside from the l
68.
by 00N8 2y ago
I think I first heard about it in a Scott Manley video - maybe this one, https://m.youtube.com/watch?v=JNT28WKAxgs - & read more on Wikipedia & possibly elsewhere
69.
by 00N8 2y ago
Reminds me of my favorite story from the Manhattan project: The project needed massive amounts of wire for all the equipment, but copper was in short supply for the war effort. They ended up working out a deal with the Treasury Department t
70.
by 00N8 2y ago
I used to have a lot of trouble with insomnia, but a few years ago I discovered Drachinifel's YouTube channel about naval history https://m.youtube.com/@Drachinifel Now I fall asleep listening to his 'drydock&#x27
71.
by 00N8 2y ago
I thought the big concern around falling down on the moon is the risk of sharp rocks & abrasive dust damaging your spacesuit, not that it's hard to get up. Still, these 'SuperLimbs' sound like a cool technology that will
72.
by 00N8 2y ago
This YouTube channel has a lot of good info about different historical swords https://www.youtube.com/@scholagladiatoria - pretty sure he covers the difference in metallurgy between Japanese & European swords The main t
73.
by 00N8 2y ago
If atmospheric nitrogen dropped by half, I'd imagine the effects would be pretty significant for aircraft, birds & internal combustion engines. Rocket launches would become more efficient (less drag), but reentry would be more chal
74.
by 00N8 3y ago
Although we can't directly measure the one way speed, can't we at least demonstrate that the speed of light is the same for various arbitrary directions? I'm imagining sending a very brief & well columnated laser pulse ai
75.
by 00N8 3y ago
NASA has actually looked into this & found the ideal method for safely vandalizing tires https://www.thedrive.com/news/nasa-built-a-tire-assault-vehi... (it's an RC robot w/ a drill, for testing how space
76.
by 00N8 3y ago
As long as it doesn't end up in a flatspin an airliner should be able to pull up from a dive. For an extreme example where this was tested in practice, in the https://en.m.wikipedia.org/wiki/China_Airlines_Flight_0
77.
by 00N8 5y ago
It would be nice to see someone get rid of Putin for high-minded ideals like peace, justice, democracy, or the welfare of Russians & Ukrainians. But I'm not too optimistic on it happening that way. I worry that anyone w/ the w
78.
by 00N8 5y ago
If it's not legal to drive drunk, why would it be legal to drive up to 5 cars at once through a computer, where latency & limited views would likely create similar impairment? Sure, 95% automation w/ remote drivers can work mo
79.
by 00N8 5y ago
For that I'd purpose a "taxi Turing test" - a vehicular automation engineer rides in the back wearing augmented goggles that block out where a driver may or may not be sitting & distort all voice audio to sound robotic. T
80.
by 00N8 5y ago
It's not cost effective. (Same reason we don't encase it in giant synthetic diamonds or bury it in the earth's mantle) Plus the material is valuable & space launches are dangerous. Launching to space probably introduces m
81.
by 00N8 5y ago
No, the ignition here is small - on the order of a stick of dynamite. There's no reasonable way to scale it up to the size of a hydrogen bomb. Even if the lasers could just be scaled up larger & still work, which they can't b&
82.
by 00N8 5y ago
I like your thinking & I wish this was a thing, but even if it were legal to sell new cars w/out ABS, traction control, backup cameras, etc., it seems like anyone who would actually follow thru w/ buying a car like that could
83.
by 00N8 5y ago
the rounded symbols for 'database' icons are based on some ancient storage medium used in early mainframes - magnetic drum memory I think
84.
by 00N8 5y ago
We invented farming, so we had the opportunity. Other animals never figured out how to get milk unless humans or their mothers give it to them.
85.
by 00N8 6y ago
I use pycharm and as long as I set the virtualenv I'm using as the Project Interpreter in Preferences it lets me "drill down" to the library code as well
86.
by 00N8 6y ago
I remember watching a TV ad where Michael Jordan around the age he was when he retired played 1-on-1 against himself as a college player. This was 15-20 years ago & I wrote an essay for high school English class on how that ad shows we
87.
by 00N8 7y ago
I read that at least one shuttle commander thought the ejector seats would've been useless anyway b/c if you used them while the solid rocket boosters were still running you'd get burned up & lose your parachutes from the
88.
by 00N8 7y ago
I think it's time we develop chemical agnostic impairment tests. I don't really care whether someone is impaired because of alcohol, research chemicals, or just emotions & extreme sleep deprivation; I care whether they have th
89.
by 00N8 7y ago
IME .bashrc already doesn't work the same on OS X, though, so that's still a weird reason.
90.
by 00N8 7y ago
thank you. this really validates my decision to work as a backend Python engineer at a well-established startup.

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