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Anonymous Posted 13 years ago
Grammar

"sphere movements"

Hi.
I saw a sentence: "Sphere movements were determined by ..."
My question is why not to write: "sphere's movements". Is it correct as well?

Or more generally speaking, should I write
"sphere position" , "sphere radius", "sphere height"
or
"sphere's position" , "sphere's radius", "sphere's height" ?

Thanks.
  

Top answer

" is incorrect. g. " is also possible.

— GPY

  • " is incorrect.
  • g.
  • " is also possible.
  • This style may feel more general, and less about a particular sphere, but it is somewhat context-dependent.
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2 Answers
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"sphere's movements/position/etc." is incorrect. You need an article (or other determiner), e.g. "the sphere's movements/position/etc."

"sphere movements/position/etc." is also possible. This style may feel more general, and less about a particular sphere, but it is somewhat context-dependent.
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Sphere movements were determined with simple rules in accordance with contact patterns between spheres and Brownian motion.

Please post the whole sentence.
This is a scientific abstract for a paper describing the simulation of spherical objects in a filtration medium. There are many sphere movements, calculated during the simulation.
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