gene-h

42 ms·

361.
by gene-h 10y ago
Service bureaus. Companies that 3d print parts for people. Imagine a data center, except instead of servers you have row after row of 3d printers.
362.
by gene-h 10y ago
Supposedly they are making the materials it can use 'open,' meaning that you might be able to refill it with your own powder. The interesting thing is, they have to do this because of the market they are targeting. HP is targeting
363.
by gene-h 10y ago
It almost certainly uses black ink. All parts produced with the machine they have now are to be black. It technically doesn't use beads, it uses plastic powder. It works exactly as you described though.
364.
HP begins selling 3D printer 10x faster than laser sintering(3ders.org)
3 points by gene-h 10y ago|0 comments
365.
by gene-h 10y ago
The problem is, no one wants to fund solar thermal power. There are worries that advances in photovoltaics might make solar thermal power obsolete over the 30 year life of these plants.
366.
by gene-h 10y ago
Applied Materials presented a roadmap on how we might get to 3 nm using disappointingly conventional semiconductor processing techniques[0]. In short, you make the transistors tall and thin. [0] https://web.archive.org/web&#
367.
by gene-h 11y ago
There are much simpler solutions to fighting the robots in the article. One could also score a sensor kill by draping a big plastic garbage bag over it. If one uses a space blanket or something that absorbs RF, one would disable it too. The
368.
by gene-h 11y ago
Well you have more unique features from which you can do localization on.
369.
by gene-h 11y ago
Well if the US does go to war with Saudi Arabia, I hope it's an economic one. Stuff like funding electric cars and clean energy to cut off Saudi Arabia's oil money. But that's probably not going to happen.
370.
by gene-h 11y ago
Do you have any examples of these? Lattices and gradient structures are cool, but the problem is it's difficult to actually make these structures. 3D printers can make these structures, but they only accept data in B-Rep. Not to mentio
371.
by gene-h 11y ago
OpenCascade is pretty much the only open source CAD kernel. There is brlcad, but that can only do CSG. We tried parasolid, then we got forced into using ACIS. We didn't really end up with much of a complete product in the end as this w
372.
by gene-h 11y ago
It's glasses free as long as your head is in the right place. The nintendo 3Ds uses this tech. Microlenses also enable stuff like light field cameras and light field displays. Particularly cool in this area is NVIDIA's near eye li
373.
by gene-h 11y ago
I worked on a project that used the OpenCASCADE CAD kernel, and our conclusion was that it still has a ways to go. We often got errors with boolean operations and the speed of operations was generally slow.
374.
by gene-h 11y ago
According to another commenter, A9CAD is a 2d CAD software. If this is really the case, you should check out QCAD. It is a nice free and open source 2d CAD program.
375.
Reconstituting Asteroids into Mechanical Automata(nasa.gov)
2 points by gene-h 11y ago|0 comments
376.
by gene-h 11y ago
However, this is much clearer than firing said lasers from under the atmosphere. While charged dust is a problem for the laser equipment itself, this can be mitigated with special dust attracting equipment. Getting the lasers to the moon wo
377.
by gene-h 11y ago
F=ma In this case m ~ 1 gram and a = 0.2c / 120 seconds =499654.097 m/s^2 F = 499654.097 m/s^2 * 1 gram = 500 newtons However this force is distributed over the whole sail which has an area is 16 m^2, so pressure applied to t
378.
by gene-h 11y ago
You are putting out 100 gigawatts for 2 minutes. One does not need 100 one gigawatt powerplants, just some way to store and release a lot of energy really fast. Second, we have mirrors that can reflect up to 99.999% of a single wavelength o
379.
by gene-h 11y ago
The problem is getting a compact throttlable rocket engine. While you can throttle solid rocket motors[0], the solid rocket motors you can buy at your local hobby shop would not be very good for this, as they don't burn for very long.
380.
by gene-h 11y ago
Of course just because they have the patent does not mean it will actually work or that we have the technology to do so.
381.
by gene-h 11y ago
Not to mention, consumer electronics aren't very radiation hard. I would not be surprised if strapping some nasty isotopes to a DJI phantom causes it to malfunction.
382.
by gene-h 11y ago
Does it work with mono?
383.
by gene-h 11y ago
The maximum torque an electric motor can produce is proportional to the magnetic field in the windings which is proportional to number of turns and current. Increasing the number of turns means more mass, increasing the current means more h
384.
by gene-h 11y ago
Jonathan Hurst, the inventor of the ATRIAS robot, has argued that we have the actuators necessary and that efficiency solves some of the problems with batteries[0]. A brushless motor hooked up to a big reduction gearbox can have a pretty hi
385.
by gene-h 11y ago
The power density of electric motors is pretty amazing. Take for instance quadcopters, a couple of brushless motors can lift their own weight, batteries, and still have plenty of thrust left over to accelerate[0]. Yes those power densities
386.
by gene-h 11y ago
This is not very surprising. From Boston Dynamic's recently released robots and their proposed direction for the future it was pretty clear they were not working with the other robotics divisions. Almost all of the robots Boston Dynami
387.
by gene-h 11y ago
Entertainingly, Alexa supports purchasing music, so one could release a song on Amazon music with audio that triggers Alexa to buy it.
388.
by gene-h 11y ago
Well said drones might not need real time radio communication or they could communicate optically. GPS denied navigation is something missiles have had for a while so jamming GPS is out. The small size also means that less current will be i
389.
by gene-h 11y ago
There is also Superconducting Magnetic Energy Storage(SMES), train energy storage, molecular spring energy storage. Train energy storage is driving a trainload of concrete blocks uphill when power is cheap and doing regenerative braking on
390.
by gene-h 11y ago
Perhaps it would be better to call it gradar? This is certainly the craziest sensor I have ever heard of.

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