6th Dimensions in a 3 Dimensional universe

Kathie7
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Is it possible for an object with 6 dimensions to exist in a three dimensional universe?
 
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Is it possible for a sphere to exist embedded in a plane?
 
Of course it's not, if it it was what would it look like?
 
Of course!
 
Isn't this probably a question about Calabi-Yau spaces, by someone trying to understand what extra dimensions mean?
 

Thread 'Detecting Gravitons?'

I seem to notice a buildup of papers like this: Detecting single gravitons with quantum sensing. (OK, old one.) Toward graviton detection via photon-graviton quantum state conversion Is this akin to “we’re soon gonna put string theory to the test”, or are these legit? Mind, I’m not expecting anyone to read the papers and explain them to me, but if one of you educated people already have an opinion I’d like to hear it. If not please ignore me. EDIT: I strongly suspect it’s bunk but...
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