The Disease: The Disease: Bacillus cereus can cause two distinct types of illnesses: 1) a diarrheal illness with an incubation time of approximately 10 to 16 hours, and 2) an emetic (vomiting) illness with an incubation time of one to six hours.
radius of curvature. n. (Mathematics) the absolute value of the reciprocal of the curvature of a curve at a given point; the radius of a circle the curvature of which is equal to that of the given curve at that point. See also centre of curvature.
Definition of Circle. Definition: A circle is the set of all points that are the same distance, r, from a fixed point. General Formula: X 2 + Y 2 =r 2 where r is the radius. 1  Unlike parabolas, circles ALWAYS have X 2 and Y 2 terms. 2  X2 + Y2=4 is a circle with a radius of 2 (since 4 =22). 3  Remember that a circle is a locus of points.