elihu

280 ms·

1. 2761.▲
   by elihu 10y ago

   > “Optical inter-satellite links permit flexible routing of traffic on-orbit. Further, the constellation ensures that frequencies can be reused effectively across different satellites to enhance the flexibility and capacity and robustnes
2. 2762.▲
   by elihu 10y ago

   Sure, but it takes a lot of power to do it and the price goes up really fast. I think once you get over about 100 or 150 watts it's possible to cut thin metals. To cut think plate steel takes a lot more. Since I've just got a 45
3. 2763.▲
   by elihu 10y ago

   Looks pretty cool, but it seems like it would be impractical to use regularly for small things due to the hassle of purchasing, storing, and disposing of large quantities of abrasives. (I wonder if higher-pressure commercial machines consu
4. 2764.▲
   by elihu 10y ago

   It's not blocking me at the moment.
5. 2765.▲
   by elihu 10y ago

   I did my best, it wasn't much I couldn't feel, so I tried to touch I told the truth, I didn't come to fool you But even though it all went wrong I'll stand before the Lord of Song with nothing on my tongue but Hallelujah
6. 2766.▲
   by elihu 10y ago

   Because rust is statically typed, and "x" has to have a concrete type known at compile time? Maybe there's a use case for matching trait objects against types to get back the original type. But, I think you could do the same
7. 2767.▲
   by elihu 10y ago

   Constitutional amendments need a 2/3 majority in the House and Senate to officially be proposed (except when proposed through a constitutional convention, which hasn't happened since the original constitution was written), and mus
8. 2768.▲
   by elihu 10y ago

   The Republicans dislike Obama just as much as Clinton, yet his presidency has been virtually scandal-free and he remains quite popular. Clinton's problem is that Democrats and Independents who aren't politically predisposed to di
9. 2769.▲
   by elihu 10y ago

   Any idea if the Linux drivers do this as well?
10. 2770.▲
    by elihu 10y ago

    > The problem Alexander is trying to solve is: > How can you distribute responsibility for design through all levels of a large hierarchy, while still maintaining consistency and harmony of overall design? > The pattern language do
11. 2771.▲
    by elihu 10y ago

    It's worth mentioning that "A Pattern Language" is just that, it's a language of about 250 patterns that can be applied to urban design, building layout, and construction. If you want to know more about design patterns
12. 2772.▲
    by elihu 10y ago

    I agree with you completely, but there are people who aren't okay with big black rectangles on their roof (or are married to someone who isn't okay with big black rectangles on their roof). People tend to be emotionally attached
13. 2773.▲
    by elihu 10y ago

    It might be better to say that home PV and EV and battery storage go hand-in-hand (since that allows you to dump your surplus battery into your car at night), which appears to be Tesla's strategy. It would help if the battery storage
14. 2774.▲
    by elihu 10y ago

    Sheet music typewriter (from the linked story, if you click "show more" enough times): https://pbs.twimg.com/media/CvzBRKIXgAA-cp_.jpg It makes sense that such a thing would exist, but I've never really
15. 2775.▲
    by elihu 10y ago

    Here's the discussion on this from yesterday: https://news.ycombinator.com/item?id=12822032
16. 2776.▲
    by elihu 10y ago

    The opposing argument to that is that if someone takes a market position and then writes an article, they're accused of trying to make a quick buck by swaying the market. So, between you and those who are concerned about the desire to
17. 2777.▲
    by elihu 10y ago

    Looks like https://www.reddit.com/ isn't affected, but https://www.reddit.com/r/all is, regardless of whether you're logged in or not. edit: looks like it's fixed now.
18. 2778.▲
    by elihu 10y ago

    I like the demos. The transition from ratios to equal temperament was kind of jarring. It might help to not jump straight from the pentatonic scale to a chromatic scale and then go back to the major scale later, but to introduce the penta
19. 2779.▲
    by elihu 10y ago

    I don't have any good web links, but a couple of books that I've found useful are The Science of Musical Sound by John R. Pierce and Harmonic Experience by W. Mathieu. (The former is more focused on sound and scientific theory, w
20. 2780.▲
    by elihu 10y ago

    Main> majscale [(1,1),(9,8),(5,4),(4,3),(3,2),(5,3),(15,8),(2,1)] Main> map (\(x,y) -> (432.0 * (fromIntegral x)) / (fromIntegral y)) majscale [432.0,486.0,540.0,576.0,648.0,720.0,810.0,864.0] That's pretty cool. The w
21. 2781.▲
    by elihu 10y ago

    One proposed pitch standard that was never widely used set C at 256 hz just to make the math slightly easier. https://en.wikipedia.org/wiki/Scientific_pitch
22. 2782.▲
    by elihu 10y ago

    That's a good point, but it is relevant that Elon Musk isn't just a "scientist" or "expert" but a businessman positioning himself to sell a product. I'm willing to give him the benefit of the doubt on this
23. 2783.▲
    by elihu 10y ago

    I'm not very knowledgeable of radiation hazards in space, but from some casual wikipedia browsing, it appears that the primary hazard is from protons (and various charged particles) being spewed out from the sun. How practical is it to
24. 2784.▲
    by elihu 10y ago

    I'm glad Zubrin brings up the economics of Mars colonization, since that's easy to neglect. Once you're there, how do you make money? Mining might be lucrative if Mars has gold or platinum or some valuable mineral that'
25. 2785.▲
    by elihu 10y ago

    Artificial light isn't the best, but it can be made to resemble daylight; I don't see that as a show-stopper. If we can find some nice lava tubes that can be sealed and pressurized, it might make for some rather spacious dwellings
26. 2786.▲
    by elihu 10y ago

    Perhaps that's one of the advantages of using a really big ship; you can put more shielding / water tanks between the sun and the passengers. If it's a major problem, they might just orient the ship in a direction that gives
27. 2787.▲
    by elihu 10y ago

    :( I hope that's not universally true, and that proofs are still actively taught in some high schools.
28. 2788.▲
    by elihu 10y ago

    For a lot of people, geometry is their primary or perhaps only exposure to proofs. Not that everyone needs to understand proofs in their day-to-day lives, but it's a good mental discipline to at least be exposed to, and geometry proof
29. 2789.▲
    by elihu 10y ago

    Awhile back, I wrote a library[1] to wrap a hex grid around a sphere (technically, there are 12 pentagons so it isn't a true hex grid, but close enough) and perturbed the elevation via perlin noise and then wrote some cellular automata
30. 2790.▲
    by elihu 10y ago

    Measurable progress is great, but it would have been helpful to have some indication of what pressures are needed to produce a useful fusion reactor. Three atmospheres? Three hundred? Are we approaching a break-even point, or is it still