- In the Hipparchian, Ptolemaic, and
Copernican systems of astronomy, the
epicycle (from
Ancient Gr**** ἐπίκυκλος (epí****los) 'upon the circle',
meaning "circle...
- line to the right. A
given planet then
moves around the
epicycle at the same time the
epicycle moves along the path
marked by the deferent.
These combined...
- the path of a
chosen point on the cir****ference of a circle—called an
epicycle—which
rolls without slipping around a
fixed circle. It is a particular...
- and the
other planets orbiting around it in
circular paths,
modified by
epicycles, and at
uniform speeds. The
Copernican model displaced the geocentric...
-
standard epicyclic gearing.
Around 500 BC, the Gr****s
invented the idea of
epicycles, of
circles travelling on the
circular orbits. With this
theory Claudius...
-
their data, in
their measurements of Brihaspati's revolutions, apogee,
epicycles,
nodal longitudes,
orbital inclination, and
other parameters. For example...
-
versions disagree in
their measurements of Shani's revolutions, apogee,
epicycles,
nodal longitudes,
orbital inclination, and
other parameters. For example...
-
astronomy that were po****r
among the
Arabs and Byzantines. His work on
epicycles has come to
symbolize a very
complex theoretical model built in order...
-
sphere above it and the
sphere below. When
scholars applied Ptolemy's
epicycles, they
presumed that each
planetary sphere was
exactly thick enough to...
- the
planets are each
governed by two
epicycles, a
smaller manda (slow)
epicycle and a
larger śīghra (fast)
epicycle. It has been
suggested by some commentators...
