-
revolving on
larger circular orbits, or
deferents.
Hipparchus (2nd
century BC)
calculated the
required orbits.
Deferents and
epicycles in the
ancient models...
- is
moved by a
system of two spheres: one
called its
deferent; the other, its epicycle. The
deferent is a
circle whose center point,
called the eccentric...
- The vas
deferens (pl.: vasa deferentia),
ductus deferens (pl.: ductūs deferentes), or
sperm duct is part of the male
reproductive system of many vertebrates...
- curves. The
paths of
planets in the once po****r
geocentric system of
deferents and
epicycles are
epitrochoids with d > r , {\displaystyle d>r,} for both...
- view, such as the
apparent retrograde motion of the planets, a
system of
deferents and
epicycles was used. The
planet was said to
revolve in a
small circle...
-
Claudius Ptolemaeus constructed a
geocentric planetary model based on
deferents and
epicycles to
explain Jupiter's
motion relative to Earth,
giving its...
- 1119/1.13764.
Retrieved August 29, 2014. See
equation 8 in "Eccentrics,
deferents,
epicycles and equants". Mathpages. The
quthor derives this in a complicated...
-
astronomer Abū Ishāq Ibrāhīm al-Zarqālī in the 11th
century described the
deferent of Mercury's
geocentric orbit as
being oval, like an egg or a pignon, although...
- BCE,
retrograde motion was
explained by
having the
planets travel in
deferents and epicycles. It was not
understood to be an
illusion until the time...
-
smaller spheres. Ptolemy's
system emplo**** devices,
including epicycles,
deferents and equants, to
account for
observations that the
paths of
these bodies...
