Population density: 174 people per square mile (high). Mar. 2016 cost of living index in Florence County: 83.3 (less than average, U.S. average is 100) We are giving away a $200 prize - enter simply by sending us your own pictures of this county! Click here to upload your Florence County photos (outside city limits)
The definition of coherence is something logical or consistent and something that makes sense as a whole. An example of coherence is an argument that has no inconsistencies. coherence. coherence. The quality or state of cohering, especially a logical, orderly, and aesthetically consistent relationship of parts.
Coherence time, the time over which a propagating wave (especially a laser or maser beam) may be considered coherent; the time interval within which its phase is, on average, predictable.