Magic is just what you don’t understand. Everything is a mechanism. Even if there was magic, a human soul, the afterlife, God, it would still operate under certain logical rules and principles. Eventually, unless there was something keeping us from obtaining knowledge, we would be able to apply science to magical forces. Science will eventually understand everything it is possible to understand, which might honestly be everything.
Yeah people used to think this way. But the Halting Problem proved that not everything in mathematics is solvable. If we can’t solve every mathematical problem, there’s gonna be things in science that aren’t solvable either.
Sorry for upsetting your belief system, but it’s simply not possible for us to know everything. Just one of those quirks of life, it’s been mathematically proven that not everything can be proven.
Halting Problem
Goes for me into the same bucket as proofs of god.
Why? The answer is known. You can easily proof it by contradiction. Therefore the halting problem is unsolvable.
This solution actually provides some good insight into other problems and wether or not they are solvable. It is useful, even though the negative result might seem disappointing.
where spherical metal cow?
Roll 2d10 to synthesize technetium.
Also light is not sentient, i knows when it is being measured and does different things, but its not sentient DO NOT WORRY!!!1!1!!!1!
(things often behave differently when you blast them with high powered lasers)
And the high powered laser itself is behaving strangely.
https://en.m.wikipedia.org/wiki/Double-slit_experiment
If we setup to disprove that light is particles, no luck, it’s a particle. If we setup to disprove that light is a wave, no luck, it’s a wave.
I understand there’s some reasonable quantum explanations, but many of those have some very weird implications. Last time I tried to wrap my head around it, we were still working on disproving whichever of the quantum theories we can disprove. That’ll be nice because it’ll likely rule out a lot of silly theories, while leaving an equally silly but probably true, theory standing.
Ahh, it’s no big deal. I know it sounds magical, but there’s probably some humdrum explanation…you’re probably just popping in and out of different universe in the multiverse whenever you observe a particle, or something mundane like that.
I don’t know if I should be proud or not that I recognise a FULL BRIDGE RECTIFIER
I only know this because of ElectroBoom
Single phase only
It’s something I’ve been proud to recognise and when electroBOOM did his piece on it, I was glowing with pride.
But the basic FBR there creates pulsating DC, for steady DC, you need capacitors, to trim the peak voltage and fill in the dips.
Though, if you have three phase, with each phase on a FBR, and combine the DC output, it’s pretty steady on the output because of how three phase works (no capacitors needed), and I think that’s pretty cool…
Seriously though, three phase AC is really interesting in how it functions.
I heard that in his voice
I mean, I’m relieved I recognize that one since I actually studied electrical engineering and I should remember these kinds of things.
Stop!!! Get those partial derivatives and upside down triangles away from me! I don’t want to see those abominations I learned in my electrical studies.
very smart to avoid the triangle, it gets so scary
We have cats that can be alive and dead at the same time. Perfectly normal, no magic involved.
And we can make you age slower than your twin brother, just go on a very fast space trip. Still no magic needed. It’s totally legit
We can make a single ray of light hit a wall and go through two or more windows at the same time, then interfere with itself. No magic, just don’t look too closely at the windows or it stops working.
We can also make two perpendicular polarizers stop blocking all light by adding more polarizers in between them. Also not magic, but the brightening is not linear, don’t ask why.
What’s the last one? (Bottom right)
Courtesy of google lens
https://www.postalmuseum.org/blog/powering-mail-rail/
In short a rectifier for post office railway?!
Edit: contents and Spelling
A mercury arc rectifier. The mercury vapor is ionized, and used for increasing the current carrying capacity of the component – compared to how much a traditional valve design with complete vacuum would work.
In short, it makes DC out of AC.
After my sensiblechuckle.gif I appreciate this sensible answer
Weird how magic and mystery stops being magic when scientists have words for it.
One day we’ll discover the afterlife, but we’ll just call them “Post-Human Conciousness Wells” or something, and insist it totally isn’t the same thing as that ancient superstition.
Cmon, you wanna tell me the world is purely material when our math literally uses imaginary numbers to make sense of things?
Imaginary numbers are merely a poorly named mathematical construct used to reconcile the empirically observable phenomena of nature (e.g., summations of waves). They’re the means by which we achieve mathematical closure under exponentiation. You could call them whatever the F you want, so long as they could be used to represent vectors in the complex plane.
What reason do you have to believe in anything outside of material nature?
Up to the introduction of quantum mechanics imaginary numbers where only ever a theoretical tool and any calculation in electromagnetism, mechanics or even relativity can be done without them.
Also, any measurement you can make will always result in real numbers because there is no logical interpretation for imaginary measurements (a speed of 2+i m/s doesnt really make sense)
Imaginary numbers are indeed poorly named. They are not much more imaginary than members of ℝ.
It’s all fine… except for the part where reality has a √-1 component.
Bro, are you not aware of the Fourier transform?!? Electrical impedance? Wtf???
I said that any calculation in electrodynamics CAN be done without imaginary numbers, I never said that it would be the most common or convenient way of doing things.
If you use a different form of solution to maxwells equations, electrical impedance can totally be expressed as just another real property. Fourier transform also is not necessary to solve maxwells equations or any other physical systems. It just might make it significantly easier and more convenient.
Obviously imaginary numbers existed and where used way before quantum mechanics was a thing but they werent technically necessary in physics because they never appeared in the equations of fundamental theories (Maxwells equations, general relativity, newtonian mechanics)
Yes, and one CAN integrate by taking paper cuttings and dispense entirely with the idea of infinity.
I was just trying to make an argument that imaginary numbers were technically not necessary and thus it makes historical sense that they werent seen as something ‘real’. Im not trying to get people to stop using them ;)
Eh, this is not worth your time or mine to argue about. Let’s move on. Also, I take your point.
It’s called a joke
It’s fucking mindless.
You’re fun!
I bet you’re a blast at parties.
Idiotic joke
Math is a tool of the mind to describe our world, imaginary numbers is only a extension of that tool to allow us to go beyond what mathematical logic prevents us to do, while still getting in the end a real number. Math, despite being powerful, is a flawed tool, so getting around its flaws by creating things like imaginary numbers isn’t absurd and doesn’t make the result any less real at the end.
On the other hand, I don’t think calling everything we don’t understand “magic” or the new trending words “supernatural” and “a miracle” and give god or anything else (like karma) credit for it would be more clever. Back then, we didn’t understood the concept of thunder and interpreted it as god’s wrath. Now, we understand it’s a transmission of electricity from the negatively charged clouds to the neutral ground through ionized particles in the air. I don’t think that scientists now, despite referring to the same phenomena, are talking about the same thing as we did a long time ago.
So no, no scientist will discover the afterlife “but we’ll just call them “Post-Human Conciousness Wells” or something, and insist it totally isn’t the same thing as that ancient superstition.” as it won’t be.
On the other hand, I don’t think calling everything we don’t understand “magic” … and give god or anything else (like karma) credit for it would be more clever.
i think quite a few theologians would agree with that point
And it’s great. Though, as a religious person, thinking this way is no more than shooting yourself in the foot, which is quite sad because religion has only two choice: either cultivating the ignorance but going against science, which is wrong, or cultivating knowledge but overtime, disappearing as a religion. Either way, nowadays it’s doomed.
Religion and science are orthogonal. Science seeks to answer the question of “how?”, while religion seeks to answer “why?”
Understanding the Big Bang all the way through evolution doesn’t give an indication as to why all of this happened. Why are we here? What is our purpose? Science doesn’t have an answer for these questions because these questions are orthogonal to science. Any kind of answer to this kind of question would constitute a religion.
It’s really atheism (at least in the present iteration) that’s doomed to failure. It’s dependent on ignorance of basic philosophy, and attempts to derive any kind of morality based solely on science results in things like eugenics and an “the ends justify the means” kind of mentality. Atheist ethics have resulted in more deaths than all other religions combined. And yes, atheism is a religion, but the ignorance of atheists has resulted in them believing it isn’t a religion even when it exhibits all the properties of a religion. It’s just a shit religion, which is why it’s doomed to fail.
Religion and science are orthogonal. Science seeks to answer the question of “how?”, while religion seeks to answer “why?”
Religion doesn’t try to answer anything: it’s just blind faith. You’re not gonna try to tell me religious people are “looking for” anything. The definition of religion is “belief in a deity”. It doesn’t try to explain or find out anything.
It’s dependent on ignorance of basic philosophy, and attempts to derive any kind of morality based solely on science results
Since when atheism prevents philosophy? Haven’t you heard of atheist philosophers? They exist, they’re not fairies, you know. About morality, it’s still a subject and a lot of philosophers have different opinion, with the subjective or objective moral, relativistic moral, etc… And whatever you mean by “derive any kind of morality based solely on science results”, it’s still better than arbitrarily define a moral based on a book written by some people a long time ago to then enforce it for centuries, with violence if needed, and then when the bad atheists come to clean all the mess by making moral laws to have everybody end up agreeing on after few decades, claim it was just a misinterpretation of the texts or whatever, which is the dumbest excuse I’ve ever heard of.
Atheism isn’t a religion either: atheism is a lack of belief in the existence of an unproven (and certainly unprovable) entity. So a lack of belief certainly didn’t kill anybody.
And atheism was never the reason or the foundation of the sentence “the end justify the means”, it existed long before atheism was even a concept.
Math is a tool of the mind to describe our world, imaginary numbers…
There’s actually some controversy on that one:
https://www.scientificamerican.com/article/is-the-mathematical-world-real/
Quantum mechanics, as far as we know, requires imaginary numbers.
nope, they’re just one mathematical construct out of many (e.g. 2D vector calculus or geometric algebra), and they just happened to stick
Nope, you’re just wrong. Quantum mechanics without complex numbers(real quantum theory) is less predictive than complex(regular) quantum theory. https://www.scientificamerican.com/article/quantum-physics-falls-apart-without-imaginary-numbers/
Incorrect. You can construct an isomorphism between the even subalgebra of the 2D geometric algebra Cl(2) and the complex numbers that maps 1 to the unit scalar and i to the pseudoscalar: https://link.springer.com/article/10.1007/BF01883676
Are you interested in proving me wrong, or figuring out the right answer? If you actually read that article instead of just the title, you would have noticed at the end it says
This leads us to say a few words about the widely held opinion that, because complex numbers are fundamental to quantum mechanics, it is desirable to “complexify” every bit of physics, including spacetime itself. It will be apparent that we disagree with this view, and hope earnestly that it is quite wrong, and that complex numbers (as mystical uninterpreted scalars) will prove to be unnecessary even in quantum mechanics
They literally say that “complex numbers are fundamental to quantum mechanics”. In other fields of physics complex numbers are just a convenient tool, but in quantum mechanics they are(as far as we know) fundamental, even if the author hopes that to be proved wrong at some point.
You seem like you know a bit about alternatives to complex numbers in other areas of physics, so it would be interesting to have a further conversation, as long as you stop being so defensive.
Complex numbers seem to be used either as 2d vectors or as representation of waves/circles in exponentials, is there an alternative that combines both of those uses?
Yep, there’s an alternative, i.e. equivalent mathematical formulation that does everything complex numbers do: the geometric algebra introduced in the article I posted earlier.
The fundamental object of GA is the “multivector”, which is essentially a sum of scalars, vectors, bivectors and higher grade elements. For instance, you could take the unit x-vector and add it onto some number, say 2, to get the multivector M = 2 + e_x. (To be precise, the space of multivectors is the direct sum over the n-th wedge of the base vector space, n = 0 to dim V).
Another important concept is k-vectors, which are essentially k-dimensional volume elements. For instance, a bivector is an area with a direction, and a trivector is a volume with a direction (in 3D there is only one possible “direction” for the volume, but in 4D spacetime volumes itself can be oriented like surfaces can be in 3D).Then, you introduce the “geometric product” for two vectors a and b:
ab = a·b + a ∧ b
where a · b is the normal scalar product between the two vectors, and a ∧ b is the wedge product between them. The wedge product essentially is the plane spanned by the two vectors, and is antisymmetric (a ∧ b = - b ∧ a, because the orientation of the plane is reversed when exchanging the vector). For instance, the unit bivector in the x-y plane is given by
B_xy = e_x e_y = e_x ∧ e_y
Notice how the scalar product part of the geometric product is zero, and only the wedge (i.e. bivector part) remainsIn 3D, there are four types (“grades”) of objects: scalars, vectors, bivectors (also known as 3D pseudovectors) and trivectors (or also known as 3D pseudoscalars). It’s already a very rich subject and has many advantages over classical vector calculus, but for replacing complex numbers, we’re mainly concerned with the 2D case.
In the 2D case, there are three types of objects: Scalars, 2D vectors, and bivectors/2D pseudoscalars. There is only one possible orientation for a 2D plane in 2D, so we just denote a bivector with area A as B = A I, where I = e_x ∧ e_y is the only unit bivector/2D pseudoscalar.
A nice thing we notice about the I is that it squares to -1 with the geometric product:
I^2 = (e_x ∧ e_y)^2 = (e_x e_y)^2 = e_x e_y e_x e_y = - e_x e_y e_y e_x = -e_x e_x = -1
The first step works because the scalar product part between e_x and e_y is zero. The second step is just writing out the square. The third step is e_y e_x = e_y ∧ e_x = - e_x ∧ e_y = -e_x e_y, which again works because e_x · e_y = 0. We see that the 2d pseudoscalar I behaves just like the “classic” imaginary unit i.Because the geometric product is associative, and commutative if only scalars and bivectors are involved, the geometric notion of scalars and 2D pseudoscalars can fully replace the notion of complex numbers by making the substitution a + bi -> a + bI.
If you want to learn more about GA, I can recommend Doran, Lasenby: Geometric Algebra for Physicsists :)
There’s a really good science fiction novel by Robert Sheckley called Immortality, Inc. where scientists in the future have discovered that there is an afterlife, but the only way to ensure you get there is a medical procedure and you can only do that if you can afford it. That’s just the beginning, there’s a huge amount of worldbuilding, but that’s the main theme of the book.
If you think it to the end, existence of an aftlerlife would be evidence that we run in a simulation.
Friend of mine (who is dead now ironically enough, and damn, I miss him), wrote a story about this. Where the dead show up on some random planet in the Andromeda Galaxy, in their prime, one that’s infinitely large and does the minecraft thing where it generates as you go, and contains the means to do pretty much anything except for leave… with them just showing up in the Capital City of the planet if they die again, which cannot be done of natural causes here.
The dead initially think it’s Heaven, but then they notice “Heaven” is being powered by a Dyson Sphere, eventually they connect enough of the dots to realize that their world is a simulation.
The protagonist is the grandchild of one of the deceased who wound up here after testing experimental teleportation technology, turns out the simulation brought him there to inform him why teleportation technology shouldn’t be invented.
Eventually the grandchild goes back to Earth, agreeing to keep this a secret, for fear that if people knew about this it would create “Dyson Sphere cults” and would encourage people to commit mass suicide, just “dying to get there”
My thought was more like, then there must be god, that god must have been created (since not naturally developed) so he must be there for a reason (administrator or something) so there must be a system behind it.
But nice story!
How did you come to that conclusion?
Which part?
Okay imma need an explanation for the middle bottom and bottom right panels, what are they?
Also love the idea that magic is just science we haven’t explained yet. Most of us would be burned s as witches in the past based on our current knowledge
The bottom right one looks like a mercury arc valve: https://en.m.wikipedia.org/wiki/Mercury-arc_valve It reminded me of an old Photonicinduction video https://youtu.be/QY6V2syGnZA
Here is an alternative Piped link(s): https://piped.video/QY6V2syGnZA
Piped is a privacy-respecting open-source alternative frontend to YouTube.
I’m open-source, check me out at GitHub.
Solely based on knowledge, yes. In practice most of us wouldn’t be able to create a half working lamp from raw materials.
“I call it…FIRE!!! Oh. Shit. You already have that. I don’t really know any others.”
This is also why at see inventions emerge almost at the same moment from people who don’t share knowledge.
A lot of invention is material science.
Even if I know enough to make a modern computer from raw materials, I’m not going to find the necessary industry to refine those raw materials correctly in the 1400s.
deleted by creator
samw, what is the bottom right??
Mercury arc valve, an old method of converting AC electricity to DC.
The middle bottom is the demon core, and I guess the bottom right is a reactor of some kind
We can totally explain how the universe works. It’s random! But it’s already not random! We can explain why, but you won’t understand it. Not magic!
god i love those big old tube AC converters
This is good shit lmao
