(Encyclopedia) pyrotechnicspyrotechnicspīˌrōtĕkˈnĭks, pīˌrə– [key], technology of making and using fireworks. Gunpowder was used in fireworks by the Chinese as early as the 9th cent., and it was they…
(Encyclopedia) Palm Sunday, in the Christian calendar, the Sunday before Easter, sixth and last Sunday in Lent, and the first day of Holy Week. It recalls the entry of Jesus into Jerusalem riding…
(Encyclopedia) Hess, Victor Francis, 1883–1964, American physicist, b. Austria, Ph.D. Univ. of Graz, 1906. After teaching at the universities of Graz and Innsbruck, he came to the United States in…
(Encyclopedia) calendar [Lat., from Kalends], system of reckoning time for the practical purpose of recording past events and calculating dates for future plans. The calendar is based on noting…
(Encyclopedia) HuseinHuseinh&oomacr;sīnˈ [key] or HusaynHusein–sānˈ [key], c.626–680, Muslim leader, second son of Ali and Fatima (daughter of Muhammad). With the assassination of his father in…
(Encyclopedia) solsticesolsticesŏlˈstĭs [key] [Lat.,=sun stands still], in astronomy, either of the two points on the ecliptic that lie midway between the equinoxes (separated from them by an angular…
