Revered_Beard

u/Revered_Beard@lemmy.world
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My understanding is that "the speed of light in a vacuum" isn't really about light itself, but rather about the speed limit of cause and effect, or "information", in our universe. Light just happens to move at that maximum speed.

In quantum mechanics, even if you can have an entangled pair (separated by long distance) collapse instantaneously, that system still couldn't be used for instantaneous communication that exceeds the speed of light in a vacuum. (At least, that is what I have previously understood.)

I read all three articles, and didn't find an answer to this question:

When they say "quantum teleportation of information" - The speed of that teleportation itself is still limited to C, right?

To be clear, it's not that they shoot laser beams from their feathers as some sort of mating ritual or defense mechanism (which, honestly, is probably how I would have used my own laser feathers, if I had them), but that there are strikingly identical nano structures that can reflect back a little bit of laser light, under laboratory conditions:

After staining the feathers with a common dye and pumping them with soft pulses of light, they used laboratory instruments to detect beams of yellow-green laser light that were too faint to see with the naked eye. They emerged from the feathers’ eyespots, at two distinct wavelengths.

From what I understood of the article, it's not just the size (which you can get from merging previous black holes), but the combination of size, speed, and angle that are raising eyebrows.

Smash two random black holes together, and the odds are, they're spinning at different random angles. Do that a bunch of times, and unless their angles all happened to be lined up just right, the the resulting spin will be a lot slower than the maximum speed a black hole of that size can spin. But these were spinning at 80% and 90% of their max speed.

Okay, so maybe they were both "normal sized" black holes that gobbled up a lot of matter around a galactic nucleus? That might work, except then you'd expect them to both be spinning in the same direction - but they weren't.

So, none of the scientists' predictions are really matching what they actually observed. Maybe it was one of those things, maybe those models are off a bit, or maybe there's another model to explain these kinds of black holes that we just haven't thought of yet.

As an example, in Reaper, you can add a reverb effect to a section that you are looping. Then in the Render dialog, enable the "second pass render" option.

That chunk of audio that it renders, will become a perfectly seamless loop in itself. The reverb tail that would have gotten chopped off at the end of that render, will continue on with the start of the render.

At that point, if you didn't really need the beginning and end of the song, you can have that chunk of the song that seamlessly loops forever, when played on repeat.

If you are willing to do it manually, I would highly recommend using Reaper instead. Both Audacity and Reaper have learning curves to them, but Reaper has dramatically better tools for seamless transitions. You are more likely to end up with clicks and pops in Audacity (or pay a steep price in time fiddling around at the microscopic level of the waveform).

tl;dr - By using this very strange file format, you can functionally have access to the vast power of a vector database, but with the local simplicity of sqlite.


If I'm understanding this correctly: if you wanted to do a simple search for exact text strings, and that was all that you needed, then yes, you should probably use something like an sqlite database to index and query from.

However, if you are working with massively large data sets, and you need a vector database (for contextual or semantic searches) - well, that's a next level tier of complexity. At that point, you need a vector database server.

What this thing does, however, is format your data into what they call "video" (but realistically would probably look like static if you were to actually play it in VLC). Then...

... I think it's hooking into some similarities between vector databases and video processing, and then using the mature video processing technology to process the "video" at lightning-fast speeds. And you get all of that contextual power without relying on a cloud-based vector database server.

(To be clear, I'm doing a lot of hand-waving over the "similarities between vector databases and video processing" here - perhaps somebody with a computer science degree, or an autistic savant, can explain why this works the way that it does.)

From the research paper:

(Glowing red spider silk strands

a) Comparison of wt and mRFP-modified major ampullate silk fibers rolled on a capillary glass (scale bars: 550 µm).

b) Strong red fluorescence can also be seen in the major ampullate gland (scale bar: 277 µm).

c i) The genomic implementation of mRFP into the major ampullate silk was confirmed by amplifying the mRFP DNA sequence extracted from the spider's leg. Only those spiders with red fluorescent silk (scale bar: 138 µm) showed the mRFP sequence-derived signal in the agarose gel.

C ii) Total-RNA was extracted from the glands, reverse-transcribed, and subjected to R-TqPCR and a melting curve analysis showing a peak at 83°C and 87°C based on a small and a large, amplified fragment.

I think it's 100% a didgeridoo, but one that has been molded into a shape superficially resembling a saxophone.

As a longtime didg player, I can tell you that the thing that makes this absolutely worth every penny is not how light it is, the paint job, etc, but the fact that it can hit so many "hoot" notes (what they call "trumpets"), and that each hoot note is tuned to be in the same scale as the main drone.

Most didgeridoos have only one, or maybe two hoot notes, but I watched some other videos of these things being played, and I'm seeing four or five hoot notes, in addition to the main drone.

At that point, it's starting to grow beyond the realm of wind percussion instrument, into something that can play melodies.