👉 In physics, "epicoele" is a term used to describe an object that has zero angular momentum. In other words, it does not rotate about any axis, but rather rotates around its own center of mass. For example, if you have a disk rotating on your finger, the "epicoele" would be the point where the disk's rotation axis is aligned with your finger. The point at which the disk does not rotate about an axis is called the epicycle.