pseudoscope

[soo-duh-skohp]

noun

1. an optical instrument for producing an image in which the depth or relief of an object is reversed.

Word History and Origins

Origin of pseudoscope¹

First recorded in 1850–55; pseudo- + -scope

Example Sentences

Carnot's, 161 et seq.Projectiles, the effects of the impact of, 310, 327-328;seen with the naked eye, 311, 317;measuring the velocity of, 332;photography of, 309-337.Prony's brake, 132.Proof, nature of, 284.Prophesying events, 220 et seq.Psalms, quotation from the, 89.Pseudoscope,

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The pseudoscope which produces effects opposite to those of the stereoscope is an interesting device.

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Of course in this practical age the inquiry is put—Of what use is the stereoscope or pseudoscope?

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With respect to the pseudoscope—which makes the outside of a teacup appear as the inside, and the inside as the outside; which transforms convexity into concavity, and the reverse; and a sculptured face into a hollow mask; which makes the tree in your garden appear inside your room, and the branches farthest off come nearest to the eye; and which, when you look at your pictures, represents them as sunk into a deep recess in the wall,—with respect to this instrument, its practical uses have yet to be discovered.

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