This reminds me of the original patents that Magic Leap had, which involved pumping light through a single optical fiber that was wiggled by piezoelectrics into a spiral to project light (https://kguttag.com/2018/01/06/magic-leap-fiber-scanning-dis...).
Seems what it is, but with a "waveguide" instead of an "optical fiber" wiggling about. Seems like a sneaky use of the word "projection" though, since the "surface" the image is "projected" is just what the flopping waveguide head traces, with no projection extending beyond the end of the waveguide.
Yes but one could argue the frame refresh/redraw cycle of a laser projector or lcd projector is the same at slow speed. It’s not just one giant ball of light. It goes through a process and the frame itself has to redraw.
I wonder if this has implications for custom home chips/prototyping. I'm sure a big issue is vibrations but something like this could remove the need for masks at least. (again, not my area so I am clobbering terminology I am sure). It may open up home fab capabilities.
I think half the fun for people that do things like this is figuring out how to out innovate a multi-billion dollar company so that they can make something 1/4th as good but at 1/10000th the price. I bet there are some -really- innovative people out there that would figure alternatives to a lot of the expensive parts of the process and figure out how to be able to produce 2000's level chips at home. I'm not one of them though :)
The problem is that they aren't (yet) 1/4th as good for 1/10000th of the price. Patterning is just one part of the process - and not nearly the most difficult one.
I think abusing a write-off electron microscope to side step the need for masks is also an interesting idea, however, I believe acquiring wafers of sufficient quality and depositing layers to be etched could be the bigger challenge here.
Seems like you could put a few of these on a contact lens and minimally get a small private HUD. Seems like with a few of them (or fast enough scanning speed) you could build effectively a light field to give it depth)
> The chip projected a roughly 125-micrometer image of the Mona Lisa.
This may seem small (barely visible as a dot to the naked eye), but that's also the geometric mean of the Planck length and the diameter of the observable universe. So average size actually.
They mean 125um = sqrt(a*b), where a is the Planck length* and b the size of the observable universe (I didn't verify). Implying, 125um is some sort of middle ground.
*Often said to be the smallest length with physical meaning.
Ok, so it's a bullshit comment. Thank you. You could say this about everything that is not 'Planck length', it's about as useful as Douglas Adams' 'the universe is empty' (only he had a sense of humor).
Oh, even worse they are repeating it in different threads.
Because some of these are clear choices, others are not.
You can be critical of Israel and I'm fine with that - and I'm plenty critical of Israel myself. But to say 'Most Jews are lunatics' is absolutely beyond the pale.
You could say this in more general terms about all people that are religious but you didn't do that and FYI Jews don't generally have a choice about their Jewishness, just like you don't have any choice about which family you were born into.
You could even make the case that most religious people had no choice in their adoption of that religion, but most people have the theoretical option of letting go of their religion if they so desire, but you can not stop being a Jew. This little detail was baked into the religion and it is a serious problem for those that are Jewish and that wish to get away from it - and these people really do exist -, but they can not change their identity to a degree that they themselves would recognize as sufficient, besides, their environment usually also does not recognize it.
In the interest of furthering your knowledge about this:
I get all this is complicated, and maybe you really can't follow this in which case my apologies but there is a significant choice between who you work for (say, Palantir, Facebook, OpenAI or Twitter) vs what family you are born into.
As for political beliefs: yes, I'm critical of those that carry water for Trump, Putin, Netanyahu and their cronies, they're out to destroy the world as we know it and if you help enable that you are imnsho part of the problem.
Huygens Optics:
https://www.youtube.com/watch?v=_w0Z2Y5vaAQ
Sam Zeloof:
https://www.youtube.com/watch?v=Nxz_ENnmgtI
In general, getting vanity silicon made is usually much less expensive than trying to bootstrap a fab line. =3
Definitely hard for a home fab but how about a community fab? Not necessarily a geographic community.
This may seem small (barely visible as a dot to the naked eye), but that's also the geometric mean of the Planck length and the diameter of the observable universe. So average size actually.
Oh, even worse they are repeating it in different threads.
https://news.ycombinator.com/item?id=47749957
https://news.ycombinator.com/item?id=47743276
But then again, we get anti Islam posts by prominent HN'ers as well so I guess that evens things out.
You can be critical of Israel and I'm fine with that - and I'm plenty critical of Israel myself. But to say 'Most Jews are lunatics' is absolutely beyond the pale.
You could say this in more general terms about all people that are religious but you didn't do that and FYI Jews don't generally have a choice about their Jewishness, just like you don't have any choice about which family you were born into.
You could even make the case that most religious people had no choice in their adoption of that religion, but most people have the theoretical option of letting go of their religion if they so desire, but you can not stop being a Jew. This little detail was baked into the religion and it is a serious problem for those that are Jewish and that wish to get away from it - and these people really do exist -, but they can not change their identity to a degree that they themselves would recognize as sufficient, besides, their environment usually also does not recognize it.
In the interest of furthering your knowledge about this:
https://en.wikipedia.org/wiki/Off_the_derech
and
https://brill.com/display/book/edcoll/9789004331471/BP000006...
I get all this is complicated, and maybe you really can't follow this in which case my apologies but there is a significant choice between who you work for (say, Palantir, Facebook, OpenAI or Twitter) vs what family you are born into.
As for political beliefs: yes, I'm critical of those that carry water for Trump, Putin, Netanyahu and their cronies, they're out to destroy the world as we know it and if you help enable that you are imnsho part of the problem.
Or alternative true augmented reality glasses that are not limited to one focal plane.
https://www.rp-photonics.com/phase_modulators.html
Srsly title should be "MEMS Array Chip the Size of a Grain of Sand Can Project Video"
not
"MEMS Array Chip Can Project Video the Size of a Grain of Sand"