Moment of inertia: psychophysical study of an overlooked sensation

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Science  02 Nov 1979:
Vol. 206, Issue 4418, pp. 588-590
DOI: 10.1126/science.493965


The distribution of mass in an object held in the hand, as described by its moment of inertia, is a fundamental and potent but largely unrecognized contributor to the object's "feel." A limited set of experiments has produced Weber fractions for human differential sensitivity to this property in the approximate range of 1/5 to 1/3, which is about ten times the Weber fraction reported for lifted weights.