(slang) The element of a situation or problem that should be obvious but may go unnoticed through human error.

(informal) The feature of a situation, product etc. that generates amazement and excitement.

plural of factor graph

The value of energy loss rate of oscillation mode in a dissipative system.

(mathematics) A number that can be divided into two different numbers, without leaving a remainder.

(mathematics) A bipartite graph representing the factorization of a function.

(aviation) The acceleration experienced by an aircraft along a given axis at a particular instant in time.

A quantitative metric that measures how well a particular mask or respirator fits to a specific individual's face, defined as the ratio of the ambient concentration of aerosol particles to the concentration within the facepiece during use.

(physics) A probability factor for the chance of two nuclear particles overcoming the Coulomb barrier in order to undergo nuclear reactions.

(physics) A rescaling of a nuclear reaction's total cross section to account for the Coulomb repulsion between the charged reactants. It determines the rates of nuclear fusion reactions that occur in the cores of stars.