3D printed mirror array(github.com) |
3D printed mirror array(github.com) |
Check out this project https://www.leva.io/projects/kinetic-wall
You're putting yourself down here. But congrats on the proposal!
They need no painting, floor needs no protection or treatment and they won’t disappear until the light is off.
Keeping in touch with reality is extremely important (because we are bound by its rules after all), but virtual existence has enormous potential as well :)
(that can't be realized, and certainly not realized for everyone, in the world of atoms -- virtual reality is delightfully egalitarian)
Value the bits and atoms!
What real-world problems does VR serve for the average FB user? Or anyone frankly?
Meanwhile, 3D printing could greatly improve how we design and fabricate things people use every day.
Maybe not an intrinsic limitation, but for the foreseeable future, VR = a domain where some entity like Facebook is effectively omniscient and omnipotent.
It could be, but I'm willing to bet it'll be primarily used to oppress and control people. The potential for things like VR and AR is great, but the reality is that it will be used against you in ways that couldn't have been possible without it.
I guess there is an issue of the arrow not being lit enough to stand out if the mirror flatly reflects ambient light, it would need to focus a lot more light, which would also make it much bigger.
It might also be that the additional light from the arrow is just beneficial in that specific case.
(Petr Vacek & Adam Cigler / Prusalab / Czech Republic)
And congratulations!
For the last few years however I have gradually been loosing that and have started going easier on myself when I discover a mistake.
The requirement to get it right in the first time is more stringent for integrated circuit designers (which I have been too) as cycle times are in months. It is true that several tools are set up around this to help find issues before designs are sent out for fabrication. However, the tools are not perfect, and considerable insights, eye for detail and perfectionism and are still required to make a design work in the first shot.
Eg.: You can install it in such way that parliament building will get defaced every day during lunch hours by mounting on near building or tall lamp post. Or maybe put it on your own roof, that way nobody can remove it :-)
Wilder still, Turner bought off the police after for 2 million dollars, and then censored the creators from releasing an episode critical of the Boston police response.
It was a little unnerving to come home to a dozen black Suburban SUVs parked in front of my house.
I imagine you’d need a permission; just like you’d have to get one if you wanted to use a projector and project something onto parliament. (TINLA)
https://en.wikipedia.org/wiki/Danny_Rozin
Edit; I'm sure it could be https://www.smoothware.com/danny/mirrorsmirror.html
(discovered via: https://news.ycombinator.com/item?id=29063617 )
For that matter, you could probably glue down pieces of aluminized mylar rather than using mirrors, since you all you need is a spot of light, not a full-blown mirror image. Aluminized mylar is pretty cheap!
If you apply a very thin film, it will just follow the steps.
that spacing between each mirror 'pedestal' is fairly deep, it'd require a very long end-mill or a five axis machine to be able to get into those crevices.
it'd be trivial to carve the needed angle into each 'mirror pedestal' , but the current design doesn't support the premise very well.. still, doable.
Congrats, and thank you so much for sharing this, it totally made my day.
I wonder if there's any types of filament that could be used to print a mirror-like surface good enough to work ?
In a less-artistic application, you could use this idea to print multiple sections that could be assembled to make a large pseudo-parabolic mirror for a solar concentrator. You wouldn't get telescope-quality imaging, certainly, but if all you needed was to concentrate a lot of light on a small space (for a steam generator, say) it should work fine.
Congrats on the upcoming wedding!
This one looks a pretty decent size - https://www.sercalo.com/products/mems-mirrors/mm160110-2
I assume if your mirror is "only" as good as as the shiny side of some aluminium foil, you can't project things with any detail.
I mean, the resulting painting as done by Pollock or Mondriaan is pretty silly. Just splash some paint in a canvas, or draw some lines and use the "fill bucket tool" to create colored squares, right?
Oh. I thought people saw something I couldnt.
You could imagine the art piece with minimal effort: no effort spent in making it. So in a way that's the purest form of art by your criticism. If only there was some way to achieve this, we'd be done.
Aluminized Mylar would definitely work, but that's not bare aluminum but aluminum with a shiny layer over it to keep it clean.
Very useful stuff, I built huge solar concentrators with it. 1000 suns on an area the size of a poststamp. You can do some pretty crazy stuff with that kind of energy density.
Both silver and aluminum will tarnish if exposed to the air, silver more slowly but much more completely.
The process for silvering things is a lot easier to do at small scales than the process for aluminizing them. Aluminizing things normally requires a fairly good vacuum, and, moreover, a vacuum chamber large enough to fit whatever you're aluminizing. Perhaps someone will come up with some kind of convenient wet process for doing it but I'm not hoding my breath.
By contrast, you can silver glass with Tollens' test, using distilled water, silver nitrate, concentrated aqueous ammonia, hydroxide of potassium or sodium, and a reducing sugar (almost any sugar that isn't sucrose, for which you can substitute numerous other chemicals, such as formaldehyde, formate, isopropanol, or tartrate). This is commonly done as a classroom demonstration in chemistry labs nowadays, and it was done on a large scale almost 150 years ago for telescope mirrors. Nitric acid is beneficial but, unless you have to make the silver nitrate, not essential.
This is why it's much more common for amateur telescope makers to silver their mirrors rather than aluminizing them.
