If you were to look at a graph of frequency response for the blue sensor in your eyes, you'd see a roughly gaussian curve centered on some frequency of blue light ( let's call this frequency'F').
12.
This means that if we build a histogram of the realisations of the sum of independent identical discrete variables, the curve that joins the centers of the upper faces of the rectangles forming the histogram converges toward a Gaussian curve as approaches infinity, this relation is known as de Moivre Laplace theorem.
13.
So there isn't a " true " answer-in all likelyhood the density of stars in the galaxy as a function of distance from the center follows some kind of gaussian curve and as such may truly have no definite outer limit with one or two very loosely associated stars hundreds of lightyears away from the core.
14.
With L \, the column length and : N \, the number of theoretical plates can be estimated from a chromatogram by analysis of the retention time t _ R \, for each component and its standard deviation \ sigma \, as a measure for peak width, provided that the elution curve represents a Gaussian curve.
