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Updated: May 18, 2025
The following considerations may serve to remove certain untoward difficulties in metaphysics and optics, which beset the path, not only of the uninitiated, but even of the professors of these sciences. We are assured by optical metaphysicians, or metaphysical opticians, that, in the operations of vision, we never get beyond the eye itself, or the representations that are depicted therein.
Nay, the prospect was partly visible, as the unknown country becomes by degrees to the traveller's optics on the dark hill-tops. It is much, of course, to be domestically well-mated: but to be fortified and armed by one's wife with a weapon to fight the world, is rare good fortune; a rapturous and an infinite satisfaction. He could now support of his own resources a weekly paper.
In a science of optics which seeks its foundation in the intercourse between man's own visual activity and the doings and sufferings of light, these three concepts must needs undergo a decisive change, both in their meaning and in their value for the description of the relevant optical phenomena.
On gazing down into its depths, when not a breath of wind sweeps over its surface, when its face is like a polished mirror, we find the water almost as transparent as the air we breathe, yet the keenest optics can penetrate but a few fathoms below the surface.
My eye, anxiously bent the only way by which any one could approach, now discerned a figure, which was indubitably that of a man armed. None other appeared in company; but doubtless others were near. He approached, stood still, and appeared to gaze steadfastly at the spot where I lay. The optics of a Lenni-lennapee I knew to be far keener than my own.
Being the daughter of chemistry and physics, it is not astonishing that we require of it the precision of both. It is, moreover, through a profound study of the reactions that gave it birth and through a knowledge of the laws of optics that it has come into current use in laboratories.
These notions so afflicting for themselves, so grievous to others, have their epoch from the calamities of man; they will continue, perhaps augment, until their mind, enlightened by discarded reason, illumined by truth, shall set in their true colours these various systems; until reflection guided by experience, shall attach no more importance to them, than is consistent with the happiness of society; until man, bursting the chains of superstition recalling to mind the great end of his existence taking a rational view of that which surrounds him, shall no longer refuse to contemplate nature under her true character; shall no longer persist in refusing to acknowledge she contains within herself the cause of that wonderful phenomena which strikes on the dazzled optics of man: until thoroughly persuaded of the weakness of their claim to the homage of mankind, he shall make one pious, simultaneous, mighty effort, and overthrow the altars of Moloch and his priests.
In the conflict of manifold opinions, and the great variety of hypotheses which seemed to promise nothing but endless disputes, the highest idea of the science of optics that prevailed, was that of something in relation to light which might be plausibly advanced and confidently maintained.
A burst of noble music, a fine sentiment in a poem, a poor woman crying, keen personal disappointment, or any acute mental trouble, had this strange effect on the optics of Marcus Wilkeson.
His work, published about the year 1100 A.D., had great celebrity throughout the mediaeval period. The original investigations of Alhazen had to do largely with optics. He made particular studies of the eye itself, and the names given by him to various parts of the eye, as the vitreous humor, the cornea, and the retina, are still retained by anatomists.
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