000 01779cam a22003373u 4500
001 63842
003 UtSlPG
005 20260610134453.0
006 m
007 cr n
008 260607r2020||||utu|||||o|||||||||||||| d
010 _a13004459
040 _aUtSlPG
041 7 _aen
_2iso639-1
050 4 _aGV
100 1 _aBrown, J. H.
245 1 0 _aSpectropia; or, Surprising Spectral Illusions :
_bShowing Ghosts Everywhere, and of Any Colour
264 1 _aSalt Lake City, UT :
_bProject Gutenberg,
_c2020
300 _a1 online resource :
_bmultiple file formats
336 _atext
_btxt
_2rdacontent
337 _acomputer
_bc
_2rdamedia
338 _aonline resource
_bcr
_2rdacarrier
500 _aWikipedia page about this book: https://en.wikipedia.org/wiki/Spectropia
500 _aRelease date is 2020-11-22
508 _aTim Lindell, Chuck Greif and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/American Libraries.)
520 _a"Spectropia; or, Surprising Spectral Illusions" by J. H. Brown is an optical illusion book published in 1864. Disturbed by growing public belief in spiritualism, Brown created this illustrated work to offer scientific explanations for ghostly apparitions. The book features hand-colored plates that, when stared at and then looked away from, create spectral images floating on walls through the phenomenon of afterimage. Brown hoped to extinguish superstitious beliefs by showing how our senses can deceive us. (This is an automatically generated summary.)
534 _nOriginal publication data not identified
653 _aGhosts
653 _aOptical illusions
856 4 0 _uhttps://www.gutenberg.org/ebooks/63842
999 _c104666
_d104666