Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 251
each ofand places the cut thus formed inEnglish and American newspapers. Here is a row of letter Ss and one of figure eights, takenat random.* At a casual inspection the reader might say theletters were symmetrically made—that is, the top and bot-tom lobes of the figures and letters the same… … Professor Thompsons Optical Illusion. Let him, however, turn this page upside down, and the mostcursory glance possible will show him their shapes, and thedissimilarity between the upper and lower halves will strikehim with astonishment if he never tried the experimentbefore. One of the most…
Physics · Lantern projection · Electric apparatus and appliances
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-88-17.webp)
