Ptolemaic model of the spheres for Venus, Mars, Jupiter, and Saturn with epicycle, eccentric deferent and equant point.
22.
The circle acted as a deferent, carrying an epicycle along which the Moon was assumed to move in a retrograde direction.
23.
He naturally regarded circular motion as fundamental and then used the circular motion of deferents and epicycles in his earth-centered theory.
24.
However, while providing for similar explanations, the later deferent and epicycle model was flexible enough to accommodate observations for many centuries.
25.
You can certainly go to her and discuss what happened, but you do not need to do so in a deferent or apologetic mode.
26.
Apollonius of Perga ( c . 262 c . 190 BC ) had introduced the deferent and epicycle and the eccentric deferent to astronomy.
27.
Apollonius of Perga ( c . 262 c . 190 BC ) had introduced the deferent and epicycle and the eccentric deferent to astronomy.
28.
Claudius Ptolemy refined the deferent / epicycle concept and introduced the equant as a mechanism for accounting for velocity variations in the motions of the planets.
29.
In that position Batet was always deferent with the Generalitat of Catalonia, treated well the soldiers and promoted the use of the Catalan between them.
30.
In keeping with past practice, Copernicus used the deferent / epicycle model in his theory but his epicycles were small and were called " epicyclets ".
