nickparker

9 ms·

31.
by nickparker 6y ago
I want somebody to figure out a way to "backprop" / train neuromorphic nanowire circuits[0] and interface one with this retina to create a complete bionic visual system. The main limitation of the retina appears to be interfa
32.
by nickparker 6y ago
H/t the excellent Orbital Index newsletter. This is the third ever NIAC Phase III grant, which is $2M over two years to transition the most promising advanced concepts to other parts of NASA. The mission would fly a swarm of imaging sa
33.
Direct Multipixel Imaging of an Exoplanet with a Solar Gravitational Lens(nasa.gov)
1 points by nickparker 6y ago|1 comments
34.
by nickparker 6y ago
Ultra fast and reliable 3D printing for engineers - submit a file at praxismfg.com and we courier deliver a plastic copy in 0-2 days at a price you'll love. We run on proprietary printers built in house with advanced features like supp
35.
by nickparker 7y ago
Yes that seems to be the trade-off. See their specs page[0] for energy density. 236 Wh/Liter compared to 250-730 Wh/Liter in Li-ion. They would probably make arguments about cooling requirements damaging that value for Li-ion at p
36.
by nickparker 7y ago
Darn, I was hoping some progress had been made on providing feedback/reinforcement since this similar result in 2017: https://www.quantamagazine.org/a-brain-built-from-atomic-swi...
37.
by nickparker 7y ago
Buoyant forces in the Martian atmosphere would be teeny tiny no? I don’t think blimps would work very well. You could maybe get some sort of inflatable lifting body to work at high speeds though.
38.
by nickparker 7y ago
It's not about energy, it's about processes that literally don't work on Earth. See Made in Space fiber[0] for an early example - they're producing best-in-class optical fibers which can't be made on Earth because c
39.
by nickparker 7y ago
Orbital manufacturing will pay enormous technological dividends and help take care of Earth. If you step out of the parochial world where we happen to live on this planet, the fact that every one of our manufacturing processes is built ar
40.
by nickparker 7y ago
Citation needed that asteroids are easier to mine. They win on arbitrarily long timelines, but they start to look a lot worse if you want ROI in under 10 years. It takes a ton of energy to reach and return from most asteroids in a sensible
41.
by nickparker 7y ago
1. Find a way to return cubesats from orbit 2. Sell your system to anyone who wants to do science where the payload has to come back, but can't get onto the ISS / wants to experiment in open vacuum not a station. 3. Find goods tha
42.
by nickparker 7y ago
The GP is talking about the sun’s apparent speed in Earth’s sky, which is dominated by Earth’s rotation. Another way of stating it: The sun is 1 AU distant and appears to revolve around Earth once a day from our perspective so it has appare
43.
by nickparker 7y ago
Does anyone have access to the full text? Sci-hub hasn't got any proxies for this apparently. I'm curious what geometry they're printing the the EC/PC bio-ink in, eg printing coarse grained vasculature networks. If they&
44.
by nickparker 7y ago
I love this and hope to see it succeed. I've always found I work out dramatically more reliably with a little bit of social accountability. Unfortunately not hopping on as a user because I have a workout partner at the moment, but I&#x
45.
by nickparker 7y ago
Hey ccecil, long time no see! I was just checking on Continuous Composites' website the other day and thought of you. I should have some fancy demo prints online in a few weeks here, keep an eye on the website!
46.
by nickparker 7y ago
Yup, I did research on this with my own little slicer [0] back in 2014. With conventional nozzles your surface finish goes to crap past about 20 degrees. If you really want conformal layers you need a five axis platform. The flat tip of FDM
47.
by nickparker 7y ago
Agreed. I also don't like this article mixing gigatons and millions of tons. Feels like preying on people who don't get SI units... "136 million tons of capacity by 2040" is 0.136 gigatons, 1/400th of our current em
48.
by nickparker 7y ago
This is related to one of my 'scary emergency solutions' governments might adopt if they wake up to the emergency too late: Detonate nukes in shallow bore holes in silicate heavy regions and launch enormous quantities of the stuff
49.
by nickparker 7y ago
Our grandchildren are probably not going to die of climate catastrophe. However, that “probably” is sufficiently weak to justify a huge urgent response. An asteroid with a 3% chance of wiping out hundreds of millions of people in 60 years w
50.
by nickparker 8y ago
I suspect they're still headed that way long term, and just went with this design to get testing ASAP because the pusher configuration has more challenges. The flip maneuver is difficult to integrate with their sky crane style system.
51.
by nickparker 8y ago
I definitely don't believe that today and I doubt it will ever come to pass. There are more cash-efficient ways to influence elections than warping betting odds, and I think that will hold true no matter how large the betting market ge
52.
by nickparker 8y ago
I don't know if this applies to BetChecker, but PredictIt is heavily handicapped by an $850 max bet. Without the freedom for real amounts of money to come in and exploit mispriced bets, it's practically a straw poll of PredictIt u
53.
by nickparker 8y ago
Allure feels borderline dishonest to me. Clothes are mostly designed to fit perfectly on models. If you warp images of models onto other body shapes, I think you'll get images of clothes which fit perfectly on those other bodies. The a
54.
by nickparker 8y ago
When I've seen these discussions before the two big factors cited are: * Real estate investors can borrow against the long term income of their properties, and often value that above the short term rents. They also tend to be highly le
55.
by nickparker 8y ago
I don't have any statistics for you, but Google at least is looking to improve on this a bit. A good friend of mine from their NYC Brain office moved to Accra, Ghana just last week to help build out their new office there.
56.
35 years ago, Isaac Asimov was asked to predict the world of 2019(thestar.com)
47 points by nickparker 8y ago|2 comments
57.
by nickparker 8y ago
My office in midtown Manhattan gets reflected sunlight off an adjacent tower in golden hour this time of year. When conditions are just right that system somehow forms a Schlieren imaging system [0] and the variations in air density outside
58.
by nickparker 8y ago
You've found the right question to ask. Your mirror in sunlight works because the reflectivity or albedo of the mirror is very high relative to whatever target you're lighting on fire. In a magical closed system where radiative he
59.
New high temperature superconducting record: LaH10 at -23C and 170 GPa(technologyreview.com)
11 points by nickparker 8y ago|6 comments
60.
by nickparker 8y ago
The laser penetrates the filament heating it internally instead of only heating the outer surface. It's near-infrared (808 nm) so it heats the small cylinder of filament essentially uniformly throughout its volume. It's also nice

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