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What is gravity? (mander.xyz)
submitted 3 years ago by to c/science_memes@mander.xyz
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[–] 17 points 3 years ago (6 children)

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.

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  • [–] 9 points 3 years ago* (last edited 3 years ago) (4 children)

    [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)

    Wikipedia link

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  • [–] 6 points 3 years ago (3 children)

    The strangeness of the Fine Structure Constant isn't it's value, it's that we don't know what it is.

    Other constants have units that explain what they are doing. Like converting miles to meters we multiply by meters/miles. But this is just a number that is needed. That's so strange I can't think of another example.

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