Dunkin' Brands Group, Inc. to Announce First Quarter 2017 Results. Dunkin' Brands Group, Inc., (Nasdaq: DNKN), the parent company of two of the world's most recognized brands, Dunkin' Donuts and Baskin-Robbins, plans to release its first quarter 2017 financial results...
An armillary sphere is a tool that can be used to solve various astronomical problems or as an educational tool to represent movements in the heavens.
Index. Armillary spheres can be divided into two main categories: the observational armillary, as used by Ptolemy and Tycho Brahe; and the demonstrational instrument.Both types consist of a number of rings (Latin: armillae) which are arranged so as to model the circles of the celestial sphere.ndex. Armillary spheres can be divided into two main categories: the observational armillary, as used by Ptolemy and Tycho Brahe; and the demonstrational instrument.