Editing Solid angle (section)

==Practical applications==
*Defining [[luminous intensity]] and [[luminance]], and the correspondent radiometric quantities [[radiant intensity]] and [[radiance]]
*Calculating [[Spherical trigonometry#Area and spherical excess|spherical excess]] {{math|''E''}} of a [[spherical triangle]]
*The calculation of potentials by using the [[boundary element method]] (BEM)
*Evaluating the size of [[ligand]]s in metal complexes, see [[ligand cone angle]]
*Calculating the [[electric field]] and [[magnetic field]] strength around charge distributions
*Deriving [[Gauss's Law]]
*Calculating emissive power and irradiation in heat transfer
*Calculating cross sections in [[Rutherford scattering]]
*Calculating cross sections in [[Raman scattering]]
*The solid angle of the [[acceptance cone]] of the [[optical fiber]]
*The computation of nodal densities in meshes.<ref>{{cite journal| last = Falla| first = Romain| year = 2023| title = Mesh adaption for two-dimensional bounded and free-surface flows with the particle finite element method| journal = Computational Particle Mechanics| volume = 10| issue = 5| pages = 1049–1076| doi = 10.1007/s40571-022-00541-2| bibcode = 2023CPM....10.1049F| url = https://link.springer.com/article/10.1007/s40571-022-00541-2}}</ref>