A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments." (1891)
Hall, Edwin Herbert, 1855-1938, Bergen, Joseph Y. (Joseph Young), 1851-1917 · New York, H. Holt and Company · leaf 187
We see that the centre of curvature C lies between theobject-point 0 and the image-point / in the case shown byFig. 109. This is always so in the case of real imagesformed by concave mirrors, unless the object-point is atC, in which case the image-point also falls at C. If the object-point were…
Physics
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.