-
linear function of the
angle of the
deferent. In the
Hipparchian system the
epicycle rotated and
revolved along the
deferent with
uniform motion. However, Ptolemy...
- 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...
- large • ), is
placed so that it is
directly opposite to
Earth from the
deferent's center,
known as the
eccentric (represented by the × ). A
planet or the...
- sphere/slice is the
deferent, with a
centre offset somewhat from the Earth; the
other sphere/slice is an
epicycle embedded in the
deferent, with the planet...
- with
direction pointing from
apoapsis to
periapsis Eccentric, a type of
deferent, a
circle or
sphere used in
obsolete epicyclical systems to
carry a planet...
- 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...
- this
smaller circle is
called a
deferent. The body
itself rotates around the
circle of the
deferent,
meanwhile the
deferent as a
whole would be rotating...
-
University Animation of Ptolemy's two
Solar hypotheses on
YouTube Epicycle and
deferent demo – at
Rosemary Kennett's
website at
Syracuse University Flash animation...
-
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...
