Brilliant reasoning and video - did you consider publishing it Physical Review Letters D (I think). The left right anisotropy also reminds me of Huygen's assumptions for wavelet sources in diffraction gratings. The whole question seems to be connected with the idea of relative separation in space-time and the presence of an impedance tensor. If that were so Classical Dynamics too would be in big trouble. Very fine work and thank you.

Probably too late for you to read this but your idea was more or less completely worked out by NASA in the 1960s. After working on the optical computer though, they figured the next step would be a massively parallel computer with very low complexity processors. Goodyear Aerospace built one for the Goddard Space Flight Center which is where I came across it. en.wikipedia.org/wiki/Goodyear_MPP

One thing I haven’t yet seen is how adding a detector causes the pattern to be 2 lines (wavefunction collapse). I’ve seen people talk about it but have yet to see it.

Excellent presentation ! A question i'd like to be answered - How could we use that Zygo to inteferometrically measure larger surfaces than 4 inch ? Let's assume 10'' or larger convex reflecting surface.

I always enjoy your presentation and sometimes I have a question. So I thought I would ask an expert, at least someone with experience I don't have. Can you grind a parabolic that concentrates infrared light from the sun? But leaves out the visible and ultraviolet light? Thanks

I use to be optimistic about science… but now I’m 38 years old and living paycheque to paycheque. It is almost impossible to give a shit about anything when all you do is worry if you can afford rent and eat at the same time. We are so god damn doomed as a people due entirely to things we could easily fix if greed wasn’t so powerful.

Really hard to give a shit when you are living paycheque to paycheque.

Do you have a code for your app that do second correlation? I like how you build a software that can load bunch of data file to plot histogram.

The answer is obviously proportional to the wavelength You’re welcome

Light does not slows down unders gravity. This is likely wrong. Special relativity tells us light is always moving at the same speed (for the outside observers...) General relativity tells us light apprears to slow down because it is the proper time of the observer that is slowed down under the same gravitational field. Light does not slow down! the wavelenght shift is only caused by time slowing down. For the outside observer it has no incidence. I am highly skeptical, and so was Einstein about the bending of light by gavity. There are other variables at play here, like temperature change around galaxies clusters. This is portrayed in a very questionable way because individual galaxies *generaly* ( that i'm aware off) do not bend light, only clusters where there are masive temperature variations. Eddington suposedly observed this with the sun but let me also remind us the corona of the sun can also reach temperature in the million of kelvins. I therefore would be careful with this interpretation of the refractive index for gravity.

bonjour, voilà, moi, vous savez, bon, on va pas s'étaler sur le sujet....... a bon entendeur, fabrice FABRICIER

Imo whoever engineered this process is a genius

To some people maybe not but to me that is incredible and genius or in my nannys view it can only be one thing and that's witchcraft 😂 but seriously 0.50 in and hearing you explain what they are i was already blown away. Thank you I know its half a decade since you kindly uploaded this but i am truly grateful ive been trying to find out how they the dlp chips work getting overwhelmed by people online who over explain things resulting in a completely confused mess 😅

I really like this.

@Huygens Optics. Please consider the following and critique. I believe it would be a way to measure the 1-way speed of light. Let a laser light source send a pulse horizontally from S to a mirror M. Between these points place a beam splitter B close to the source. Anywhere along a line below and parallel to the line S-M, place a receiver/Clock RC. For convenience, the first example assumes RC is positioned directly perpendicular to the midpoint on S-M, such that the distances B-RC and M-RC are equal. (Variations on this experiment would place RC perpendicular to points B and M to eliminate “x” or “-x” components of the down-beam velocity, and to compare results between experiments.) A pulse of light from S would partially deflect to RC from B, starting the clock. The remainder pulse from the same beam would reflect off of the mirror M and traverse to RC, stopping the clock. Since the delay from either B to RC or M to RC could be made equal (centered) or related by trigonometrically by the geometry of the triangles formed by the paths, the delay between pulses at RC would be entirely due to the distance between B & M divided by the 1-way velocity of the beam, right? Here's a similar case: kzbin.info/www/bejne/jIKXinWkra5nnZosi=Zqi3bwwfcfFxzvPT

It would be interesting to conduct the same experiment in a vacuum, to remove the air molecules as a factor.

I posted a comment a while ago about how you did your animations and if that can be considered spectral rendering. And turns out you had already answered this the past, my future. I am nearly a year late on my watch later :/

Do you think it would be possible to achieve state-changing device based purely on light flow, like we have in electronics?

This is getting too amazing!!!!

Yes!!!! I was having this idea, THANK YOU for the awesome vid

How is a 'photon not light'? That deserves some discussion.

What I find difficult to believe is that light can be considered a "particle". It has no mass or geometrical dimenisions; it's considered a "point" object with 0 size. The idea of a "wave packet" is far more acceptable to me, but I hardly consider this to be a particle. The failure to understand is totally my own.

If light reflects off a mirror, isn’t it still moving forward?

There is a way to get these Hamamatsu PM modules cheaply, they are used in many biological laser excited analysers; the optical benches often appear on eBay for relatively low prices.

are these available to purchase?

РД-171 t-shirt 👍 en.m.wikipedia.org/wiki/RD-170

Can chromatic and spherical aberration of lens be also approached in terms of diffraction theory?

I want to see you make a chip with this. Lets see some half and full adders

Man, your crossovers of math and geometry is heaven to me!

This must be a key to learn Salsa

GOOD work

How would you address the the design of light speed clock for this architecture ?

The schematic at 16:35 seems to be wrong. There seems to be a missing resistor that should be in series from the top point of R2 and the inverting input of the OP. The correct schematic can be seen in the following figure at 16:50. The left 1 K Ohm resistor is the one that is missing in the schematics at 16:35. Despite this, very nice and instructive and educating video…

У него на футболке написано РД 171

Is there a real laboratory experiment video demonstrating that the observer effect alters the behavior of photons (transitioning from wave behavior to particle behavior)?

Hello, Firstly, thank you so much for these valuabe videos, I am new in the branch and your videos are very useful and educational to me. I will be glad if you could clarify some issues to me: 1. When testing a flat surface (window) is the refference surface to be flat also or spherical reference surface may be used as well? 2. Are the reflective abilities of the both surfaces (reference and test) to be similar, if yes so what is the range o similarity? Thanks in advance.

What would happen if you spun the sieve with a shroud? Like a stroboscope.

I’m assuming this is not how my watch is coated lol

As an astronomer who loves mirrors and lenses , Thank you so much ! Bravo !

Big problem: We cant know for most of the gates if the output is 180 degree phase shifted or 0 degree phase shifted, so when we chain together multiple gates in series the later ones will not work. The OR-gate would work in series though but you can build circuits with just one type of gate. I cant seem to find a way to get at least NAND or NOR to work, then we could at least build all gates from that. Second problem is intensity. If we have different light intesities constituting a logical 1 then destructive interference wont work. For example, if one input is 180 degree with intensity 2 and the other is 0 degrees intesity 1, then they wont cancel, we will just get a 1. Does anyone have any suggestions?

Disclaimer: While this video is of the highest caliber it contains, Not one word about the Higgs field condensate the photo interacts with. Not one peep about a having 1eV before you can be called a photon. If this kind of detritus continues we'll remain a type .7 species.

14:20 I found your channel because this is something I am currently working on.. my idea was for an LCD display that uses two pixels as logic input and outputs a third colour. With ~16,000,000 colours you basically have a massively parallel base 16million computer.

I dont understand How do you know if its so fast and so small 😂 sometimes i think scientist speculate for entertaining... i want to know if dust mite has mite forever small theory hahahah and if Karina and Omega nebulas or still alive? So far away............. also i was thinking about loneliest atom stuck between Andromeda and Milkyway at very center and when Galaxy will merge were this atom will end up? Many possibilities

What is part name for rotation feedthrough please?

I also saw many videos on the topic, included that posted on the Veritasium channel. In my opinion you’ve just found a way of proving that c is equals in all direction (@21:35), at least in a small region of the space-time, as I did more than 3 years ago but with a different approach. Here is my point Let’s imagine we have a monochromatic source of light with wavelength λ propagating toward a diffracting grating with parallel slits each separated by the distance d. We know that we observe diffraction and the first maximum (order 1 diffraction) is offset by a theta angle according to the following equation: d sin(theta) = λ (eq.1) But from the definition of velocity (space divided by time = space/time ) we also know that c = λ /T = λ v (eq.2) being v the frequency of the light. Thus combining the two eq. we have c = d sin(theta) v (eq.3) Since the frequency of light should not chance by changing the direction of propagation (we can ideally measure it in the same reference frame at rest)(*), if the velocity of light is different along the two directions, from eq. 2 we should observe different wavelengths for the two directions so that, according to the eq.1, by changing the orientation of propagation of the light , we should find the first maximum along a different angle (no more exactly theta). This simple “gedanken experiment” should be sufficient to prove that the speed of light is equal in every direction. Indeed, I suspect that the speed of light cannot be different back an forth because of geometry reason (conservation of angular momentum and so on) and is equal to c for every small region of the space-time lattice. In fact assuming that the speed of light would be different along different direction (actually ways of propagation), by imposing that the average speed (roundtrip) is always the same, there will be necessarily a particular direction in which the speed of light in the two ways is the same (assuming that a small change in the direction will not change dramatically the speed of light). (*) We can be sure that the light traveling in different directions has the same frequency by ideally measuring the frequency with a clock for both the directions of propagation. Another way of measuring the frequency is to have an emitter (emitting in all directions) and a receiver exactly tuned to the emitter frequency placed once on the right of the emitter and then on the left of the emitter and record if the signal is received equally in both cases.

This is a very intelligent experiment and shows you the result to the question "how big is a photon?" is dependant on what you mean by that question. It can be a huge distance in transmission or less than an atom size at detection. It reminds me of a story of a tourist asking a rural man for directions to a big city. The man replied, "Well I wouldn't start from here!"

This is one of the best video I ever seen on the topic. Thank you

instantly subscribed, great content, great presentation, great depth

What is the aperture of this telescope?

the most valuable 33 min I ve spent on youtube thx