The second moment of area, also known as moment of inertia of plane area, area moment of inertia, polar moment of inertia or second area moment, is a geometrical property of an area which reflects how its points are distributed with regard to an arbitrary axis. The second moment of area is typically denoted with either an for an axis that lies in the plane or with a for an axis perpendicular to the plane.
In the field of structural engineering, the area moment of inertia of the cross-section of a beam is an important property used in the calculation of deflection.
Read more about Second Moment Of Area: Definition, Parallel Axis Theorem, Perpendicular Axis Theorem, Composite Shapes
Famous quotes containing the words moment and/or area:
“A moment that gave not only itself, but
Also the means of keeping it, of not turning to dust
Or gestures somewhere up ahead
But of becoming complicated like the torrent
In new dark passages, tears and laughter which
Are a sign of life, of distant life in this case.”
—John Ashbery (b. 1927)
“Whatever an artist’s personal feelings are, as soon as an artist fills a certain area on the canvas or circumscribes it, he becomes historical. He acts from or upon other artists.”
—Willem De Kooning (b. 1904)