In the reports, one clinician noted no differences that were not negligible. The Propaganda for Reform in Proprietary Medicines, Vol. 1 of 2 Various The entire subject of adenomyoma is dealt with from the standpoint of the pathologist, the clinician, and the surgeon.
focal point - a point of convergence of light (or other radiation) or a point from which it diverges. focus. point - the precise location of something; a spatially limited location; she walked to a point where she could survey the whole street.
The chief and parallel rays meet at the tip of the image. The third ray, the focal ray, is a mirror image of the parallel ray. The focal ray is drawn from the tip of the object through (or towards) the focal point, reflecting off the mirror parallel to the principal axis.