How to pronounce“epicycles”in English

little circles called epicycles which themselves then went around Earth yes

top of epicycles and reproduce The observed positions of planets to arbitrary accuracy yeah and this is really the

observations as well as the epicycles did.

the Ptolemaic models and all these epicycles-- it was Kepler that really at the end of the day a physical cause for why the planets were moving.

Ptolemy was the one with all the epicycles, for those of you who know what that is.

they're too many pivots right so you keep adding epicycles in order to to cover things that have gone wrong

And in the end, you have so many epicycles that you Cluj the whole system so many times that it looks like it's

Well, if you do that, then we don't have epicycles.

That was a very simple theory compared to the Ptolemaic theory, there are many, many epicycles.

projection to be going backward Among the Stars socaled retrograde motion and it was a brilliant mathematical scheme in fact he could have added epicycles on

cernus okay so what did cernus do there had been this toic system for working out the motion of planets it did pretty well it used epicycles etc etc etc it

had all this computational ways of working out where planets will be when we work out where planets are today we're basically using epicycles but

epicycle to the system that just explains that one particular thing you couldn't explain before.

and in this in this part of the epicycle where the planet is going in the direction opposite to the direction of the overall epicycle it can appear in