Showerthoughts

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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.

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Every star in the sky is interacting with you through gravity 🌌 We are all connected to the universe around us. (lemmy.world)

submitted 8 months ago by [email protected] to c/[email protected]

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Gravitational force is never truly zero. If it has mass, it is pulling at you, though it may be so close to zero that you don't realize it.

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[–] [email protected] 3 points 8 months ago

Eh. It's not really a definite distinction. Even in GR you formulate effective potentials and the gradient on those potentials are still called forces. Then, what is a force on microscopic scale? It is the exchange of force mediators, like photons. If gravitons exists, then there is even a similar framework for defining a force on a microscopic level for electromagnetism as well as gravity. Furthermore, electromagnetism (qed) also has an interpretation as a curvature, as it is a gauge theory, just not a curvature of physical spacetime, and that does not disqualify if from being called a "force".