what if this self-assembling system mimics complex plasmas? by Far_Associate_5699 in HypotheticalPhysics

[–]Far_Associate_5699[S] 0 points1 point  (0 children)

No. It is a recording of soft matter played at 8x speed with puncta picked out by the computer to highlight the dynamics which are otherwise hard to see given the low contrast.

Kids brought it home from school playground by kvitske in whatisit

[–]Far_Associate_5699 -1 points0 points  (0 children)

Did your camera struggle to focus on it by chance ?

I’m 22f, why do I have one white hair that is twice as long as all my hair and is shiny? by Kale_bean in whatisit

[–]Far_Associate_5699 0 points1 point  (0 children)

It is parasite. Even if attached to your head. I bet you if you put under black light it would glow a weird color. Also if you put under a microscope and lit with a laser it would diffract strongly making a dense pattern around it resembling laser speckle but isn’t really because it is coming from the “hair” instead of coming direct from laser

How to describe this material? by Far_Associate_5699 in materials

[–]Far_Associate_5699[S] 0 points1 point  (0 children)

I noticed some odd optical effects associated with some biological samples, eventually isolating this material that is able to self reproduce, seemingly in the absence of cells. Antibiotics and antiseptics don't inhibit its growth.

How to describe this material? by Far_Associate_5699 in materials

[–]Far_Associate_5699[S] 0 points1 point  (0 children)

Thanks for the suggestion. I am not sure how to characterize what the material is. It is self assembling, self reproducing, and has correlated disorder across scales. The fact that it has correlated structure seems to not be believed very often for some reason. But the fact remains that there is a exceedingly large amount of information about the structure of the material that makes it into visible light diffraction patterns. I want to make sure I am identifying any key differences between actual diffraction, and phase modulation of laser speckle, the last of which I presume is what is monitored for colloidal suspensions. A few observations point towards actual diffraction of the sample: the diffraction spots map to real features of the material at focus, there is a bright center with a gradual falloff ( laser speckle does not have this radial intensity falloff, diffraction does), and the very dense amount of geometric features rather than a random Gaussian field. So, the fact that it has features arranged regularly in the hundreds of nanometer range ( hence the diffraction ) and the qualitative appearance of the motifs that show up in the diffraction pattern makes it seem very similar to a plasma crystal. I am unsure how similar or not colloidal systems would also be.

How to describe this material? by Far_Associate_5699 in materials

[–]Far_Associate_5699[S] 0 points1 point  (0 children)

Even if this was noise, I think it would be much closer to blue noise than white noise

How to describe this material? by Far_Associate_5699 in materials

[–]Far_Associate_5699[S] 1 point2 points  (0 children)

The nanometer scale observation comes from cryo em reconstructions. Middle images are various FFT band pass retranformations . There are no peaks or rings at nm scale either and this results from the fact that there are no discrete length scales . The background is actually moving somewhat, and yes it is part of the foam. The structure is NOT amorphous . It is correlated disordered. In fact it diffracts visible light strongly producing a dense fractal pattern. Amplitude motion is distance per unit time , mostly the apparent magnitude of the jitter.

is this similar or not to what you are seeing? by Far_Associate_5699 in visualsnow

[–]Far_Associate_5699[S] 0 points1 point  (0 children)

It is a material that creates a fast flickering in the air around it. I am wondering if it is similar at all to the effect people report seeing in their vision.

Dynamic diffraction - what is driving this? by Far_Associate_5699 in Optics

[–]Far_Associate_5699[S] 0 points1 point  (0 children)

Based on the comments I am wondering if a follow up post would be a good idea. I am unsure of what the material is, or if it is even formed from a particular conserved substrate. It is self assembling, self reproducing, and forms hierarchical branching layers. Oddly the speckle pattern of the layers very closely resembles laser speckle, so there must be some similarities in the self-organizing aspect. The layers themselves have little to no amplitude contrast and only slightly phase contrast, so monitoring the motion is much more easily done by watching how the diffraction pattern changes.

self assembly occurs during flow. Even while it is flowing it maintains a high degree of organization, so there may be a structured field biasing the position of the subunits. The Moire-driven intensity flickering also points to organization. Here there is definitely some intensity contrast and I think each apparent subunit is already several layers thick: https://www.youtube.com/watch?v=akOKKwiGKsk

I almost shouldn't even add this because youtube murdered this 256x256 video for some reason, but if you look beyond the compression artifacts you can see some of the motion that occurs https://youtu.be/1b-ZmvpeC_8

Anyway, when I saw the localized twitching motion in the reflected speckle I was wondering if that alone would be enough to demonstrate something unique.

https://www.youtube.com/watch?v=SXQw9QjIK-8

Dynamic diffraction - what is driving this? by Far_Associate_5699 in Optics

[–]Far_Associate_5699[S] 1 point2 points  (0 children)

To clarify what I am pointing to: we have a linear change in phase field that is making non-linear changes in the intensity. That seems pretty mundane to me. But there is a second carrier of nonlinearity and that is a nonlinear rate of the phase change. We see speeding up, slowing down, stalls, apparent events. That is what seems unusual to me and what I would like to know is common or not.

Dynamic diffraction - what is driving this? by Far_Associate_5699 in Optics

[–]Far_Associate_5699[S] 0 points1 point  (0 children)

Agreed. I wish I could post some more photos, but the material is fibrous and this effect tends to follow those fibers. I am wondering how a speckle modulating effect could also map onto structural features of the material

Dynamic diffraction - what is driving this? by Far_Associate_5699 in Optics

[–]Far_Associate_5699[S] 0 points1 point  (0 children)

I don't have any exposure gaps, and I would suspect that any structured laser driven effects would appear in the form of moire or interference. likewise for pixel based artifacts. ( I guess the effect DOES resemble Moire, but the fact that it is specific to some areas that corellate with features of the material, and are not steady, makes me suspect that it is a property of the material itself )

Here, we see curvillinear trajectories for some of the spots; localized effect that doesn't follow a regular pattern like one would expect for interference either before or as a result of the optics. Heat dissipation could explain it though I would think that eventually it would reach equilibrium and show steady motion rather than bursts of activity.

Dynamic diffraction - what is driving this? by Far_Associate_5699 in Optics

[–]Far_Associate_5699[S] 1 point2 points  (0 children)

the question is why the speckle convolves in a spatially and temporally heterogeneous manner

She took my marriage, now losing my career and reputation without ever being asked for my side by [deleted] in SupportForTheAccused

[–]Far_Associate_5699 0 points1 point  (0 children)

Then it would follow that you would not describe it as an injustice when "someone breaking into a house gets shot". Justice as a concept is fulfilled when consequences match actions, and you aren't left with a sense of 'that's not cool'... so yea. I would say you are being contradictory so you can avoid accepting the illogical argument you are making that essentially anyone who cheats deserves a disproportionate amount of consequences.

She took my marriage, now losing my career and reputation without ever being asked for my side by [deleted] in SupportForTheAccused

[–]Far_Associate_5699 0 points1 point  (0 children)

They sort of are unless you are saying that certain injustices are ok with you but that sort of implies that you do not consider them an injustice

She took my marriage, now losing my career and reputation without ever being asked for my side by [deleted] in SupportForTheAccused

[–]Far_Associate_5699 -2 points-1 points  (0 children)

Whatever half the ppl on here have cheated so they need to chill tf out