The phrase "about its center" is correct and usable in written English.
It can be used when discussing the location or position of something in relation to its central point.
Example: "The circle is evenly distributed about its center, ensuring a balanced appearance."
Alternatives: "around its center" or "in relation to its center".
A sphere, for instance, has rotational symmetry; rotate it about its center and its appearance stays the same.
Imagine a horizontal bar, and you need to apply a force of 10N at an angle of 30° above the horizontal for to rotate it about its center.
If the moment of inertia of a single counterweight about its center of gravity (CG) is known then it can be referred to the crankshaft by using the Huygens Steiner Theorem as follows I_{text{CW}} = ;;I_{text{CG}} ; + ;m_{text{CB}} ;left( frac{H}{12} right)^{2}.
As the fly flies, the virtual world is modified; rotated about its center, eliciting the optomotor response in the subject and causing it to turn.
The structure of the adherent deposits across the section normal to the motion of plasma torch is symmetric about its center.
Upon application of potential difference, hot segments expand against the cold segment of disc and make the cold disc rotate about its center.
The page includes information about children taking part in the club's programs and links to a newly redesigned Web site (www.bgca.org) where people can learn more about its centers, which are mostly located in urban areas and serve many minority families.
It was a sprawling system of rain and tropical-force winds that extended out for about 200 miles from its center, churning up the sea.
The width of this thunderstorm was about 20 km and its center about 5 km from the study site.
At issue is the temple's management, including decisions about its community center, school and canteen.
Let's hope Apple is a bit more forthcoming about its data center than telling us what's in the next iPhone.
