2 years, 7 months ago
How is Anti-hydrogen affected by gravity?
Will gravity push anti-hydrogen away?
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M$1 Answer
Anti-hydrogen has the same mass as hydrogen. It will be affected by gravity the same way hydrogen is.
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M$
No need. There is ample experimental evidence that the mass of anti-particles is the same as their matter-particle analogs. For example, the mass of a positron is identical to the mass of an electron, and the mass of an anti-proton is the same as the mass of a proton. Thus, an anti-hydrogen atom, comprised of an anti-proton and an anti-positron is identical to the mass of a hydrogen atom comprised of a proton and an electron.
Sorry. I meant anti-proton and positron making up an anti-hydrogen atom, not anti-proton and anti-positron, of course. There is no term 'anti-positron' as that would simply be an electron.
If shoot anti-hydrogen down a tube and measure its fall or rise then you could confirm gravities affect. Anti-matter is believed to have an opposite gravity affect, but it has not be confirmed.