Everyone always asks what is gravity.
No one ever asks how is gravity.
Poor gravity, always helping us keep our shit together but no one ever truly understands the weight on gravities shoulder.
Excuse me, but I don't see why I should have sympathy with the boot on our necks keeping us all down. Just imagine the freedom we would have if we weren't weight down by this oppression!
dies b/c the atmosphere floated away
"I get it! Platypus is a metaphor for whatever's keeping you down!"
Gravity is a platypus
Perfect use of this format. "I don't know" is the foundation of wisdom. See: reddit where too many think they know.
See:
redditliterally any message board where members of the general populace can freely participate where too many think they know.FTFY
Dunning-Keuger effect is real amd and it takes humility to avoid it.
I know just enough to know that I don't know anything.
It's not difficult. Gravity is like magnetism for things that aren't magnetic.
Yeah but if you scratch a little bit the surface, the comparison falls quickly. Okay, magnetism has two signs. Why not gravity ? Why does it attract and not repel? Okay, magnetism is carried by photons. What carries gravity?
Wrong. Magnets don't float.
Yeah I think I'll be subscribing to this community. Thank you for the meme.
"The nature of this elementary particle is best expressed through these thirty equations."
"Ok, ok, but what do those actually mean in reality?"
"Reality?"
Most of those equations are full of things that can make sense, and then there is a fine structure constant.
It's all over particles, but we don't know what it is. It has no units. It's just a number that is needed for physics to work.
[The Fine-structure Constant] quantifies the strength of the electromagnetic interaction between elementary charged particles.
Why the constant should have this value is not understood, but there are a number of ways to measure its value.
Sounds like we know what it is, we just don't know the reason for its value. (Edit: Unless I'm misunderstanding what you mean)
Sounds a lot like what we used to call the "fudge factor".
We still need to develop the equations for reality whatever that means
Working in neuroscience of consciousness field I feel him deeply. Although 57k sounds amazing to a Europoor
You can basically half American salary numbers because we have to pay for a lot of stuff that Europeans usually don't need to pay for. $57k in America is struggling if you live in a city. Anything below $40k is one car repair away from being financially ruined.
What are we considering in vs out of city? Does in city mean just downtown, within city limits, within metro area? And what are we considering a city - 300k population?
I still want to know what it is tho
https://www.youtube.com/watch?v=XRr1kaXKBsU try to follow along with this. Also, forces have force particles, there appears to be no such thing for gravity though I think scientists are still working on this problem to this day. Mass seems to be derived from the higgs field but I am not knowledgeable enough to answer how that relates to gravity per se.
Genuinely we can't tell what it is. We once thought it was just a normal pull due to mass until Einstein proved us wrong during a solar eclipse where we could see stars that shouldn't be visible from our current position in orbit. Then we get into how it works, WHICH THERE IS NO TELLING AS THERE ARE TO MANY GOD DAMNED VARIABLES INVOLVED.
You’re fucking with me, right?
Stars were visible that shouldn’t have been visible?
What am I missing?
Gravity bends space itself (which makes it able to bend light). It's really fucky. https://en.wikipedia.org/wiki/Tests_of_general_relativity#Deflection_of_light_by_the_Sun
It also fucks with time. If you saw the movie Interstellar, you know what this refers to.
The squishy humanities version of this, in America at least, goes as follows:
In grade school you learn that the Civil War was about slavery.
In high school you learn that the Civil War was about a lot of complicated things.
In college you learn that the Civil War was about slavery.
In Alabama you learn it's about Yankee Aggression.
My mom (RIP) was a boomer born and raised in Georgia. In our house, we were taught that General Sherman was in hell right alongside Napoleon and Hitler.
If he is, it's for his handling of the Native Americans and bison and not for how he prosecuted the March to the Sea. The Confederacy was a boil that needed popping.
Apu learned in post-grad glasses that it was complicated again.
That gag is cute, and I'm aware I'm killing the joke here, but it would have been funnier if it weren't for the fact that underpinning the "economic factors, both foreign and domestic" was just more slavery. The South was utterly dependent on it for their economic security and social identity, and it informed every decision their leaders made.
Gravity is just the world trying to put all the stuff in the same area of space to waste less RAM
Random Access Mass
I wish I made 57k a year.
Now you can too! With our patented PhD system you will,
- Kill your social life!
- Kill your self-esteem, values, positivity and much much more.
- Spend the rest of your life fighting for tenure in an ever saturated field of your choice!
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With just 132 simple payments of $3,800 a month, all this can be yours!
But wait, there's more! Call now and get your very own opportunity to be a TA! Enjoy belittling undergrads and sharing your growing disillusionment with the academic system. All while you're under pressure to complete your doctorate! Don't miss out!
Oh and then!? Postdocs! Check acollierastro on youtube, she has a great video on postdoc exodus.
For only 250k of college tuition?
Show us on the PhD where they hurt you.
Somewhere in the region between the unrealistic deadlines, the post grad job prospects, and the price tag, sir.
TW, please.
Timey wimey wibbly wobbly.
Wibbily, wobbily, gravity's a flirt, keeps pulling me down, but never buys me dessert!
one unresolved corner of physics
Hardly! People board airplanes every single day and we still don't fundamentally understand the mechanisms of how lift works.
When I thought there was higher pressure under the wing that pushed the plane up, I was happy. When I started thinking, instead, about little vacuum vortices above the wings pulling them up instead, I was suddenly much less comfortable with the whole proposition. Given the options and the limited effect on my daily life, I'm gotta go with Newton over Bernoulli on this one.
vacuum vortices above the wings pulling them up
We know vacuums don't "pull" things. Instead it's air pressure elsewhere that isn't balanced by the vacuum that moves things in the direction of the vacuum.
¿Porque no los dos?
We don't? I thought we kind of did
Lift works the same way a tennis racket does.
We know exactly why and how.
I heard that it was just the angle of the wings redirecting the air downwards as reaction mass, like how a rocket engine shoots air downwards.
It is both, but the pressure one contributes more to lift. You can see this when a wing stalls, the airflow separates from the upper surface and the pressure difference is gone. The angle of a stalled wing still means air is directed downwards, but the overall lift is much smaller.
At least that is what I've been told anyways
There's a reason they call a hypothetical model that unites the standard model (quantum mechanics) and gravity (relativity) the Theory of Everything.
Isn't more like grand unifying theory? Theory of everything is more broad and probably encapsulates the material and meta material.
I think what the commenter was explaining was the difference between a hypothesis and a theory.
This is for anyone else you seem to know the difference. Just as an fyi to anyone who doesn't know the difference, most laypeople say theory when they mean hypothesis.
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A hypothesis is "an assumption, an idea that is proposed for the sake of argument so that it can be tested to see if it might be true."
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A theory is "a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained."
That's not very helpful, but basically a hypothesis is an untested answer whereas a theory is a whole lot of similar hypothesis's that have been answered and can be used to predict something.
So when your crazy uncle/friend/co-worker says 'i have a theory that they're turning the damn frogs gay and I'm going to prove it.' They actually mean hypothesis. Why is this important? Cause words matter, that crazy person would be taken a lot less seriously if they didn't use words they didn't understand.
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This is why I laugh at anyone who thinks we "Already know anything" or ever will
So here's my lunesta fuelled dea on gravity.
Gravitons, like the rest of the standard model, are real. In order to measure them, we need incredibly high energy collisions.
In attempting to do this, our universe was created on accident. This is because our universe is in a black hole. But the cool shit is that black holes are really portals into our own universe. Instead of the energy spontaneously appearing as measurable particles, it's dark energy causing the expansion of the universe. The Dark energy ends up being gravitons, because gravitons are a boson and only interact with matter with the gravitational force. the black holes, then, take in "normal" fermions and bosons and spit out the gravitons. The graviton release causes an expansion of space time by "pulling" space time with it.
none of that is backed up by anything
Missing a few turtles.
Turtles all the way down.
Don't forget the elephants!
Add some string theory into the mix and it’s indistinguishable from Michio Kaku rambles.
That particle accelerator really was the peak huh?
You're sure the universe wasn't created by purpose? You're sure it was on accident?
... of space. The time part in spacetime is questionable yet again.
Wait why - Aren't the clocks from Gps satellites only in sync with our clocks when they reach their defined speed and distance to earth's core? Isn't this related to the curvature of spacetime? Genuine question
There's a new theory that time is only a side-effect of the warping of space and that they are not one and the same. Wouldn't change the result but has heavy implications on the larger scale.
Now do doctors of sociology
0 to alcoholism in 11 years.
What do you mean you don't have desk whiskey? EVERYONE has desk whiskey! Even the counselors!
Pssh, sales can do that in 2.
lemme give you a quick demonstration
I respect physicists for doing something I can't. Realistically if I had the money and time, I could pursue a degree in it, I just need my work to be less abstract to stay sane.
57k per year just for making up technobabble? Shit, I'd settle for half of that.
Did you miss the bit about 11 years of school to get to that point (and the debt that will come with that)?
If there is one thing I've learned in my decades of life, is that If you try enough, you'll find somebody who will believe anything without checking for proof, including a made-up doctorate.
I'd settle for half of that
You mean 57k per year for making techno?
The system is down
Baby don't hurt me, no more.
Man based on this comment section I wish I could see this meme. For some reason I can never get content from mander.xyz to load on my phone tho
See also: spin.
spin is something that behaves like spin. the right answer is shut up and calculate
WE SPIN. WE BALL.
Spin is easy, it just only shows in our current formulation of quantum mechanics, has no classical counterpart, is sort of a type of angular momentum, but isn't, whatever shut up.
Meat has been shown to have spin also. They made a website about this
Gravity is easy, it's the entropic magnetic charge from protons and electrons.
57k/year is 4,750/month... where is that not super comfortable living?
