āĻ āύā§āϏāύā§āϧāĻžāύ āĻāϰā§āύ
āĻ āĻāĻŋāϧāĻžāύā§āϰ āĻāĻžāώāĻž āύāĻŋāϰā§āĻŦāĻžāĻāύ āĻāϰā§āύ
āĻāĻĒāύāĻžāϰ āĻāĻžāώāĻž āύāĻŋāϰā§āĻŦāĻžāĻāύ āĻāϰā§āύ
epicycle
/ËÉpÉĒsËaÉĒkÉl/
Epicycle
01
āĻāĻĒāĻŋāϏāĻžāĻāĻā§āϞ, āĻĻā§āĻŦāĻŋāϤā§āϝāĻŧ āĻŦā§āϤā§āϤāĻžāĻāĻžāϰ āĻāĻā§āώāĻĒāĻĨ
(astronomy) a secondary circular orbit embedded within a primary circular orbit
āĻāĻĻāĻžāĻšāϰāĻŖ
Copernicus disagreed with the Ptolemaic model adding unnecessary epicycles, believing instead that planets revolve in simpler circular orbits around the Sun.
āĻā§āĻĒāĻžāϰā§āύāĻŋāĻāĻžāϏ āĻ
āĻĒā§āϰāϝāĻŧā§āĻāύā§āϝāĻŧ āĻāĻĒāĻŋāϏāĻžāĻāĻā§āϞ āϝā§āĻ āĻāϰ⧠āĻāϞā§āĻŽāĻŋāĻ āĻŽāĻĄā§āϞā§āϰ āϏāĻžāĻĨā§ āĻāĻāĻŽāϤ āĻšāύāύāĻŋ, āĻŦāϰāĻ āĻŦāĻŋāĻļā§āĻŦāĻžāϏ āĻāϰāϤā§āύ āϝ⧠āĻā§āϰāĻšāĻā§āϞāĻŋ āϏā§āϰā§āϝā§āϰ āĻāĻžāϰāĻĒāĻžāĻļā§ āϏāϰāϞ āĻŦā§āϤā§āϤāĻžāĻāĻžāϰ āĻāĻā§āώāĻĒāĻĨā§ āĻā§āϰā§āĨ¤
02
āĻāĻĒāĻŋāϏāĻžāĻāĻā§āϞ, āĻā§āĻŖ āĻŦā§āϤā§āϤ
a small circle whose center moves around the circumference of a larger circle
āĻāĻĻāĻžāĻšāϰāĻŖ
The motion of a point on an epicycle can be described mathematically by combining the rotations of the smaller circle and the larger circle.
āĻāĻāĻāĻŋ āĻāĻĒāĻŋāϏāĻžāĻāĻā§āϞ āĻāϰ āĻāĻĒāϰ āĻāĻāĻāĻŋ āĻŦāĻŋāύā§āĻĻā§āϰ āĻāϤāĻŋ āĻāĻžāĻŖāĻŋāϤāĻŋāĻāĻāĻžāĻŦā§ āĻŦāϰā§āĻŖāύāĻž āĻāϰāĻž āϝā§āϤ⧠āĻĒāĻžāϰ⧠āĻā§āĻ āĻŦā§āϤā§āϤ āĻāĻŦāĻ āĻŦāĻĄāĻŧ āĻŦā§āϤā§āϤā§āϰ āĻā§āϰā§āĻŖāύāĻā§āϞāĻŋāĻā§ āĻāĻāϤā§āϰāĻŋāϤ āĻāϰā§āĨ¤
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