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A geode (/ ˈ dʒ iː. oʊ d /; from Ancient Greek γεώδης (geṓdēs) 'earthlike') is a geological secondary formation within sedimentary and volcanic rocks. Geodes are hollow, vaguely spherical rocks, in which masses of mineral matter (which may include crystals) are secluded.
Anaximenes, an early Greek philosopher, believed strongly that the Earth was rectangular in shape. Some early Greek philosophers alluded to a spherical Earth, though with some ambiguity. [ 6 ] Pythagoras (6th century BC) was among those said to have originated the idea, but this might reflect the ancient Greek practice of ascribing every ...
Geodesy began in pre-scientific antiquity, so the very word geodesy comes from the Ancient Greek word γεωδαισία or geodaisia (literally, "division of Earth"). [ 8 ] Early ideas about the figure of the Earth held the Earth to be flat and the heavens a physical dome spanning over it. [ 9 ]
Greek agate is a name given to pale white to tan colored agate found in the former Greek colony of Sicily as early as 400 BCE. The Greeks used it for making jewelry and beads. Brazilian agate is found as sizable geodes of layered nodules. These occur in brownish tones inter-layered with white and gray.
The term also has meaning in any differentiable manifold with a connection. It is a generalization of the notion of a "straight line". The noun geodesic and the adjective geodetic come from geodesy, the science of measuring the size and shape of Earth, though many of the underlying principles can be applied to any ellipsoidal geometry.
The ancient Greeks came up with seven different words for the types of love. Experts break down what they mean and how to foster the types of love in your life.
Shortly before the 2019 NBA draft, the New Orleans Pelicans finally worked out a way to trade disgruntled star Anthony Davis. After the Pelicans won the draft lottery to get the No. 1 overall pick ...
Daemons scarcely figure in Greek mythology or Greek art: they are felt, but their unseen presence can only be presumed, [citation needed] with the exception of the agathodaemon, honored first with a libation in ceremonial wine-drinking, especially at the sanctuary of Dionysus, and represented in iconography by the chthonic serpent.