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Is energy just a manmade concept? (sh.itjust.works)

submitted 1 day ago by [email protected] to c/askscience

38 comments fedilink hide all child comments

Energy in physics feels analogous to money in economics. Is a manmade medium of exchange used for convenience. It is the exchange medium between measureable physical states/things.

Is energy is real in the same way money is? An incredibly useful accounting trick that is used so frequently it feels fundamental, but really it's just a mathmatical convenience?

Small aside: From this perspective 'conservatipn of energy' is a redundant statement. Of course energy must be conserved or else the equations are wrong. The definition of energy is it's conservation.

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[–] tomi000 5 points 1 day ago (1 children)

Exchange

[–] [email protected] 1 points 1 day ago* (last edited 1 day ago) (1 children)

I guess we can't answer OP's question, then. That's too unspecific. Something gets exchanged, true. Is that man-made? Likely false, but depends on what we're talking about.

[–] [email protected] 2 points 1 day ago (1 children)

A medium of exchange for force.

A photon of a certain wavelength imparts a known force when colliding with an electron. That force propels the electron to a higher orbital.

[–] [email protected] 1 points 1 day ago

And how does the "manmade" tie into that? Did we make the photons? Exert the force or did we do something that brought force into existence?