- 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...
-
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...
- and the
other planets orbiting around it in
circular paths,
modified by
epicycles, and at
uniform speeds. The
Copernican model displaced the geocentric...
- For Kuhn, the
addition of
epicycles in
Ptolemaic astronomy was "normal science"
within a paradigm,
whereas the
Copernican Revolution was a
paradigm shift...
- 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...
-
equant point, the
epicycle's center (indicated by the small · )
would appear to move at a
steady angular speed. However, the
epicycle's center will not...
-
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...
-
their data, in
their measurements of Brihaspati's revolutions, apogee,
epicycles,
nodal longitudes,
orbital inclination, and
other parameters. For example...
- Archimedes, with
knowledge of
epicycles and eccentrics, and the
Antikythera mechanism also
appears to
presuppose eccentrics and
epicycles in the way it produces...
