The CLEAN algorithm performs a deconvolution on the “dirty” input to increase this quantity and obtain the PSF. Cy3 and Cy5 are commonly used molecules that are stochastically activated in a technique that improve this quantity. That technique, STORM, can improve this quantity in the lateral direction, unlike the similar PALM technique. This quantity is equal to (*) lambda divided by two times the numerical aperture, (10[1])according to a formula by Ernst Abbe. The angular form of this quantity is given as 1.22 times lambda divided by lens aperture by the Rayleigh criterion. Superlenses made of metamaterials are used to increase this quantity beyond the diffraction limit. For 10 points, name this quantity which is the minimal distance between two points that can be distinguished. ■END■