precession period
91ΔT — This article is about the time difference. For the temperature difference, see psychrometrics. ΔT vs. time from 1657 to 1984[1] ΔT, Delta T, delta T, deltaT, or DT is the time difference obtained by subtracting Universal Time (UT) from… …
92Platonic year — noun time required for one complete cycle of the precession of the equinoxes, about 25,800 years • Syn: ↑great year • Hypernyms: ↑time period, ↑period of time, ↑period * * * Astron. a period of about 26,000 years, equal to the time required for a …
93Jyotiṣa — IAST|Jyotiṣa (Sanskrit IAST|jyotiṣa , from IAST|jyótis light, heavenly body : also spelled Jyotish and Jyotisha in English) is the ancient Indian system of astronomy and astrology (also known as Indian astrology, Hindu astrology, and of late,… …
949 Metis — For the moon of Jupiter, see Metis (moon). 9 Metis   Discovery Discovered by A. Graham Discovery date 25 April 1848 …
95Allais effect — The Allais effect is a claimed anomalous precession of the plane of oscillation of a pendulum during a solar eclipse. It has been speculated to be unexplained by standard physical models of gravitation, but recent mainstream physics publications… …
96Mundane astrology — ‹ The template below (Astrology) is being considered for merging. See templates for discussion to help reach a consensus. › Astrology …
97Incremental dating — techniques allow the construction of year by year annual chronologies, which can be temporally fixed ( i.e., linked to the present day and thus calendar or sidereal time) or floating.Archaeologists use tree ring dating (dendrochronology) to… …
98Timekeeping on Mars — Various schemes have been used or proposed to keep track of time and date on the planet Mars independently of Earth time and calendars. Mars has an axial tilt and a rotation period similar to those of Earth. Thus it experiences seasons of spring …
99Greek astronomy — is the astronomy of those who wrote in the Greek language in classical antiquity. It is understood to include the ancient Greek, Hellenistic, Greco Roman, and Late Antiquity eras. It is not limited geographically to Greece or to ethnic Greeks, as …
100Theories about Stonehenge — Stonehenge has been subjected to many theories about its origin, ranging from the academic worlds of archaeology to explanations from mythology and the paranormal.Early interpretationsMany early historians were influenced by supernatural… …
