Spectropia

By J. H. Brown

'Spectropia' is an optical illusion book by J. H. Brown. He was distressed by an increased public interest in spiritualism, something which he deemed a "mental epidemic." By offering a scientific explanation on the properties of light, color, and the structure of the eyes, he states in the section 'Popular and Scientific Description' that the purpose in writing 'Spectropia' was to bring forth "the extinction of the superstitious belief that apparitions are actual spirits, by showing some of the ways our senses may be deceived."

• Language: English
• Publisher: DigiCat
• Release date: Aug 10, 2022
• ISBN: 8596547164647

Book preview

J. H. Brown

Spectropia

EAN 8596547164647

DigiCat, 2022

Contact: [e-mail]

Table of Contents

INTRODUCTION.

DIRECTIONS.

LIST OF THE PLATES.

POPULAR AND SCIENTIFIC DESCRIPTION.

INTRODUCTION.

Table of Contents

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The following Illusions are founded on two well-known facts; namely, the persistency of impressions, and the production of complementary colours on, the retina.

The explanations are divided into two parts. The first consists of directions for seeing the spectres. The second, a brief and popular, as well as a scientific, description of the manner in which the spectres are produced, and is intended for the use of those who may wish to know more of this subject than is contained in the first Part.

As an apology for the apparent disregard of taste and fine art in the