St Wilfrid's Church, Halton-on-Lune St Wilfrid's Church, Halton-on-Lune St Wilfrid's Church is an Anglican church in Halton-on-Lune, a village in the English county of Lancashire. It is an active parish church in the Diocese of Blackburn and the archdeaconry of Lancaster. Halton may have been the site of an ancient Anglo-Saxon minster. Of the current structure, the tower dates from the 16th century and the remainder was built 1876–77 by Paley and Austin. The church is recorded in the National Heritage List for England as a designated Grade II listed building. At the time of the Norman conquest of England in 1066, Halton was
Spherical lune Spherical lune In spherical geometry, a spherical lune is an area on a sphere bounded by two half great circles which meet at antipodal points, and is an example of a digon, {2}, with dihedral angle θ. The word "lune" derives from "luna", the Latin word for Moon. A spherical wedge is the volume of space bounded by two planes passing through a sphere center and the surface of the sphere. Great circles are the largest possible circles (circumferences) of a sphere; each one divides the surface of the sphere into two equal halves. Two great circles always intersect at