Letters on natural magic, addressed to Sir Walter Scott (1832)
Brewster, David, 1781-1868 · London : John Murray · leaf 125
light, and thus giving- an uncertainty to the di- rection of the light, we may weaken the illusion in any degree we choose, so as to overpower it by touch or by a process of reasoning. I have had occasion to observe a series of analo- gous phenomena arising from the same cause, but produced without… … luminated by a candle or a window at S, in place of there being a shadow of the margin L of the hollow next the light, as there would have been had the body been opaque, a quantity of bright refracted light will appear where there would have been a shadow, and the rest of the cavity will be compa-…
Scientific recreations · Magic
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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