Recreations in science and natural philosophy (1844)
Ozanam, Jacques, 1640-1717. n 93006101, Montucla, Jean Etienne, 1725-1799. n 85800222, Hutton, Charles, 1737-1823. n 84160398, Riddle, Edward, 1788-1854. no2004015425 · London : Thomas Tegg · leaf 293
nce they are re¬ flected to the eye at e. The rays proceeding upwards to the eye by the last reflection, the observer is led to imagine the image below the instrument at g, and placing his paper there the image may be traced with a pencil. The prism is mounted in a brass frame supported by brass… … is before it; and therefore the eye cannot, in the same state, see both the pencil and the image distinctly. To remedy this inconvenience; to the brass frame of the prism are attached two lenses a, b, (Fig. 12.), the one concave and the other convex, the former to be turned up in front of the…
Scientific recreations
Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.
![An illustration from Original microscopic drawings made between the years 1824 and 1840 mostly published in works by Dr. Goring & A. Pritchard [graphic]. (1824)](https://img.insideoutlibrary.com/img/200/wellcome-wellcome_b21301177-83-1.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-498-215.webp)
