Sir, this is a certified dad joke here.
we are but a gravy train in outer space
Submitted 6 months ago by fossilesque@mander.xyz to science_memes@mander.xyz
https://mander.xyz/pictrs/image/6b72f786-0b8e-4c11-82bc-be9e99a19221.jpeg
Comments
xav@programming.dev 6 months ago
troglodytis@lemmy.world 6 months ago
AFC1886VCC@reddthat.com 6 months ago
Gravy is one of the most fundamental forces
Chrobin@discuss.tchncs.de 6 months ago
Gravity isn’t a force tho…
JohnDClay@sh.itjust.works 6 months ago
I put it in my force balance equations, it’s a force. It doesn’t matter that it’s from curving spacetime rather than exchanging particles, it still exerts force on things.
Chrobin@discuss.tchncs.de 6 months ago
But the point of general relativity is that a free-floating observer is equivalent to an observer in free space. That means that falling due to gravity, which you call a force, is an unaccelerated movement, i.e. no force.
Zerush@lemmy.ml 6 months ago
Well, its a geometric deformation of space-time by the force of mass
quicksand@lemm.ee 6 months ago
Yes it is. We just don’t know what makes it work
Chrobin@discuss.tchncs.de 6 months ago
In our current understanding of physics, it’s an effect from the curvature of space and not a force. Quantizing gravity results in unphysical divergences. Whether there will be a way to model gravity as an exchange of particles, we can’t know for sure. So according to our current knowledge, it’s not a force.
JillyB@beehaw.org 6 months ago
I’m no scientist, but there is some debate about whether it’s a fundamental force. Some think it might be like centrifugal force which isn’t “real” but shows up in a certain reference frame. Gravity might actually be a result of thermodynamics and entropy.
cynar@lemmy.world 6 months ago
Knowledge is knowing that tomato is a fruit.
Wisdom is still not putting it in a fruit salad.
Gravity isn’t a force. Its effects can be mapped to an equivalent pseudo force and used as such. Outside of general relativity, or Quantum mechanics discussions, gravity is a force.
bwrsandman@lemmy.world 6 months ago
But is it fundamental though?
oce@jlai.lu 6 months ago
Depends on your definition. If you stop at quantum mechanics way of defining a force with boson exchange then you may also say gravity doesn’t exist, because it’s not included in the standard model for now.
Chrobin@discuss.tchncs.de 6 months ago
Well, firstly, we can quantize gravity pretty easily, it just has unphysical divergences.
But secondly, I think it makes most sense to talk about the current accepted physics because we don’t know how quantum gravity will work.
JizzmasterD@lemmy.ca 6 months ago
Don’t be saucy