Yes.
Damn that was fast I was just going to link a picture of my mons wagnus
Your mom’s what??
His mom’s wangus, pay attention.
When you zoom in on those pristine facets it looks like a gravel driveway
I mean, if you zoom far enough, its just a few atoms floating around in mostly nothing.
Define “flat” and “straight”
Okay! Can do!
Defnitions: Flat (adjective), My chest. Example My chest was flatter than an angle measured at 180°
Straight (adjective) anything that has perfect parallelism to my chest. (See notes)
Notes (Straight): Straight cannot be used as an adjective to describe my sexuality.
Additional information some users may find helpful: This is satire
FAQ: Is this commentary on anything political? A: No, this is typically considered bad humor.
Is this a joke? A: yes, this is a joke just as much as the author of the joke is -entirely.
Why did you write this? A: I thought of this stupid joke and have no impulse control on writing dumb comments (see previous question)
What is the meaning of life? A: 42
Do dinosaurs really exist? A: I had Dino nuggies last night and do not believe big chicken would lie to me about making up dinosaurs, so yes they are real
Has this joke gone too far? A: This joke is for me, I need to make myself laugh
As a serious note though, on a micro enough scale, everything will become bumpy/not a single linear thing. On a macro enough scale it would be impossible to determine variation and appear flat.
In a common human sense, many things are flat and linear to normal human perception. Many crystal and metal formations have flat, straight, and sharp features.
And something theorized to be existing and straight would be (iirc) the planck length. Light so energized that the wave becomes essentially linear (please verify because this is memory only)
Short answer, depends on perspective. For example surface of perfectly still lake could be considered flat, but on macro level it follows curvature of the earth. But we still use water to level our buildings, because radius of a planet is so big. On microscopic level it’s anything but flat.
Someone else mentioned spider silk danging. It’s also another great example, but the same perspective clause applies. But usually crystals and some geological features tend to have flat features.
maybe somebody else pointed this out:
Light ALWAYS travels in its idea of a straight-line.
Always.
It doesn’t matter whether it is bent by gravity or refraction, from its perspective, it kept going straight.
Only an “outside viewer” sees any non-straight-line-ness being done, but the outside-viewer isn’t seeing the curved-space or the curved-refractive-index that the photon saw.
Well, kinda, but the trajectory of the photon is contracted into a single point from its POV. Whatever destination is has, it’s already there as far as it’s concerned. It doesn’t experience time given that it’s moving at the speed of light.
It depends on where you draw the line (heh) on “straightness” and “flatness”. Some planes on gems or geodes are pretty flat, but probably not perfectly flat. Another example is a spider’s web between two points. That’s a pretty straight line if it’s taut, but again, probably not exactly perfect.
Nothing is perfectly flat, neither in nature nor man made. It’s purely a mathematical concept as every surface has some form of texture if you look close enough.
Well, yes. My point exactly.
Right, atoms are not flat
A string with weight will be a pulled under gravity. Yes even a taut spider web.
Orient it vertically
Perhaps
Depending on scale. Is the surface of the lake flat?
Once you experience true level you will never go back.
True level must be like true symbols (like, in the idea that there are true names and words. Like a divine language).
If you have a true level or symbol then you have something, just as good as reality, but manipulable like language. The best of both worlds.
And even better, you need never leave the confines of the inside of your mind ever again. You can live, within your construct of perfect god-language, and interact with the world from there. Safe and powerful.
Man… are you good? You sound like a guy who showed up at my house and started saying that the pyramids and stars would aline and tell us the meaning of the universe. Also that açaí berries were the ultimate nutrition. Hope you’re doing okay there.
You really have to declare to what degree you are asking. You could take a very carefully grown crystal and define a plane based on its lattice structure. But the atoms are not all perfectly placed on the lattice once you zoom in far enough. There’s even gaps between the atoms! A “plane” of carbon looks more like a net to an observer on the scale of those atoms.
Is an electron a perfect sphere? Scientists probably thought so in 1900 but now ask a physicist and they will say “No, probably not”.
And yes, as others have stated, our space time is not perfectly Euclidean so that’s another level of uncertainty. How do you measure the small imperfections in a Euclidean model when actual space time isn’t Euclidean?
As a professor used to tell my class, there are no 0s.
Lines and planes in the mathematical sense are 1 and 2 dimensional. They don’t have any height (and lines also no width). So they can’t exist as a physical object made out of atoms as they are already 3 dimensional.
They only exist as a concept.
The fact that something isn’t a 3d object doesn’t mean it doesn’t exist. Does a line of contrast between 2 colors exist? Does a movie projected at a wall exist?
Does a line of contrast between 2 colors exist?
I’d say no. And even if it did, those colours are made out a material that consists of atoms that reflect light, both of which are “fuzzy” and 3D and can’t make a proper line.
Does a movie projected at a wall exist?
Sure. There is photons bouncing of a wall and the information they carry we call “the movie”. I guess that counts. But the relevant bit is the wall and again it’s made out of atoms and therefore is not a proper flat 2D surface.
So yeah, I’d say not being 3D does mean something can’t exist in the physical world.
Then, o pedant, do straight or flat objects (thus linelike, planelike) exist?
Why ask a pedantic question and be upset by a pedantic answer?
You are merely seeing through pedantic eyes.
That’s a pretty pedantic argument.
Graphene is a great example of a planar molecule, within 1 atom of tolerance. Graphene is found in naturally occurring graphite rocks.
You could get serious Van der Waals off a couple sheets of that.
Their manifestation in our world was limited, they have already gone to another plane of existence
A lot of people talk about straightness and flatness as mathematical concepts. But I think OP means it in a technical sense, as in flat like your phone screen or straight as the edges of the screen but in nature. In this sense, flatness or straightness is defined as a finite number of measured points on a surface of which the coordinates all lie between 2 mathematicaly flat/straight parallel tolerance planes/lines. By that definition, depending on what a person would consider flat, say 0.002 mm between the planes/lines, there are definetly naturally occurring crystals that would pass that test.
No, they are mathematical constructs. Everything in nature is composed of matter and the like, so there are no perfectly straight lines or flat planes.
Even a beam of light curves and refracts as it interacts with matter and space over a long enough distance.
Unless the light is in a vacuum like space
I asked my good friend gravitational lensing about light in space, and they said that light can go and get bent
My understanding is that in a true vacuum light will not be reflected or bent by particles. However, due to gravity bending space time itself, light will follow the curvature of space. It would depend on the observer if the path if light is straight. If you look at the light passing by, it would not be straight under influence of gravity. If light itself is the observer, it will travel in a straight line :)
In the case of gravitational lensing the observer is looking at light coming in. An outside perspective.
Light is going straight from it’s point of view . It is following the shortest path between two points. The transform from different reference frames is why we see it as curved.
But if that’s your definition, then there are no straight lines in mathematics either because you could transform the straight line from one system into a curved line in another system.
Yes, nature is not objective - it is relative. Mathematics is a discipline that is based around an objective framework. Lines and planes are mathematical constructs. Mathematics gives us an objective framework that can be used to model a natural world, but they are just models.
Some things are “line-like” or “plane-like,” in that modeling them as lines or planes is helpful to describe them. You can measure a distance “as the bird flies” because birds fly in lines compared to how humans travel along roads and paths. You can describe a dense, heavy, falling object as traveling in a straight line, because air resistance may be negligible over short distances.
A model is only useful insofar as it accurately represents reality. Lines and planes are mathematical constructs, and they may be incorporated into models that describe real things. “A beam of light crossing a room travels in a straight line” is probably a useful construct because the effects of gravity and refraction of the air are probably negligible for nearly all purposes. “The surface of a pond is a plane” is probably an acceptable model for a cartographer, since the height of ripples and the curvature of the earth are negligible at that scale.
The initial question was not “Do straight lines and flat planes model anything in nature,” but whether they exist in nature. They do not. They only exist in mathematics.
They only exist in mathematics.
The curved light path is because a mathematical transform is done between two different frames of reference.
It’s no different than taking a mathematically straight line and performing a transform function to map it to a curved coordinate system. Because you allow transformation functions, there would also be no straight lines in math.
Light travels along geodesics that curve because spacetime itself is curved. Geodesics are curves that minimize distance between two points in a curved space. They are considered straight lines in a curved space, but it’s right there in the definition. Geodesics are curves. Our reality is a curved space, therefore straight lines in our curved space are curves. They are not straight.
Our reality is not matiematically flat. It is matiematically curved.
From the point of view of light, it is traveling in a straight line. It does not observe the curve therefore spacetime isn’t curved to it. There is no preferred reference frame.
It is the same with special relativity. If a particle is moving at near light speed, you observe it as heavier. But from the particle’s point of view it is you who are moving and you are heavier.
Curved spacetime is a mathematical transformation to reconcile the different reference frames in the same way time dilation is a transform between reference frames.
There is no absolute frame of reference.
You’re not taking about the same thing as everyone else.
You’re comparing reality to reality, curvature to curvature. We’re talking mathematical theory. There’s nothing about our reality of spacetime that meets the definition of mathematically flat.
Type however many paragraphs you want about reference frames. None of them adhere to being mathematically flat. They are all curved spacetime.
There is no absolute frame of reference!
Light travels mathematically straight in one frame of reference but curved in another. Both are correct. You use mathematical transforms to map one coordinate system onto another in the same way you can map a mathematical straight line into curved geometry.
https://www.einstein-online.info/en/spotlight/equivalence_light/
Look at the example they gave of light in an accelerating elevator (which is actually an example written by Einstein in one of his books on relativity). One has straight light and the other is curved. Both reference frames are correct.
A frozen lake.
A spider’s thread when it’s climbing downwards.
Aaaaactchhhually a frozen lake would follow the local curvature of the earth, even assuming ideal conditions and crystal formation and so on
Still it took >12h before someone started to discuss that :)
I’ll going to call you on that one. Surely gravity defines the surface of the lake, not local curvature.
Yeah, that’s fair. Still curved though. In my defense I had it right in my brain, the idea got garbled on its way to the keyboard
Neutrinos travel in a straight line.
Yes they do
What are some examples?
Also mica for flatness.
Is the Higgs Field a flat plane?
Right after they mow, otherwise it’s rather fluffy.
Simple answer: no
I think we’ve got enough evidence (proof?) that the universe is flat, and straight lines will continue straight forever and never intersect.
Whether there’s an actual thing that exists that does this? Dunno. Two parallel particles I guess?
Wut? Spacetime is anything but flat.
Sorry. Straight parallel like never intersect
Right, my bad.
