Physiology of the Special SensesE. Arnold, 1910 - 239 pages |
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Common terms and phrases
afferent after-image appears Aristotle blue brightness chapter cochlea colour vision colour-blindness components contrast contrastive effect corresponding cutaneous dark adaptation definite depends described deuteranope dichromatic diminished distance effect end organs Ewald Hering excited existence experimental experiments facts fibres Forel fovea fovea centralis green Helmholtz Hering's horopter hypothesis important increased intensity Kries light localised match matter mechanism membrane method mixed mixture movement Nagel's Handb nerve normal numerous object observations obtained olfactory pain partial colour-blindness peripheral physical physiological pigment plane position pressure produced protanopes protopathic purple reader RECOMMENDED FOR FURTHER regard responsiveness retina retuning rotation sensory simultaneous contrast skin smell sound spectral colours spectrum stimulus stimulus value surface temperature theory of colour tion tone totally colour-blind trichromatic trichromatic vision valency vertical vibrations violet wave length Weber's law yellow YOUNG-HELMHOLTZ THEORY μμ
Popular passages
Page 217 - From what we have shewn it is a manifest consequence that the ideas of space, outness, and things placed at a distance are not, strictly speaking, the object of sight; they are not otherwise perceived by the eye than by the ear. Sitting in my study I hear a coach drive along the street; I look through the casement and see it; I walk out and enter into it; thus, common speech would incline one to think I heard, saw, and touched the same thing, to...
Page 170 - And of the organs they first contrived the eyes to give light, and the principle according to which they were inserted was as follows: So much of fire as would not burn, but gave a gentle light, they formed into a substance akin to the light of every-day life; and the pure fire which is within us and related thereto they made to flow through the eyes in a stream...
Page 194 - This colour has a peculiar and almost indescribable effect on the eye. As a hue it is powerful, but it is on the negative side, and in its highest purity is, as it were, a stimulating negation. Its appearance, then, is a kind of contradiction between excitement and repose.
Page 170 - When the light of day surrounds the stream of vision, then like falls upon like, and they coalesce, and one body is formed by natural affinity in the line of vision, wherever the light that falls from within meets with an external object.
Page 156 - I had entered an inn towards evening, and, as a well-favoured girl, with a brilliantly fair complexion, black hair, and a scarlet bodice, came into the room, I looked attentively at her as she stood before me at some distance in half shadow. As she presently afterwards turned away, I saw on the white wall, which was now before me, a black face surrounded with a bright light, while the dress of the perfectly distinct figure appeared of a beautiful sea-green.
Page 191 - Considered in a general point of view, colour is determined towards one of two sides. It thus presents a contrast which we call a polarity, and which we may fitly designate by the expressions plus and minus. Plus. Minus. Yellow. Blue. Action. Negation.* Light. Shadow. Brightness. Darkness. Force. Weakness. Warmth. Coldness. Proximity. Distance. Repulsion Attraction. Affinity with acids Affinity with alkalis.
Page 46 - The smell of phosphorus is one of them. During a year or two of adolescence I used to be dabbling in chemistry a good deal, and as about...
Page 194 - This impression of warmth may be experienced in a very lively manner if we look at a landscape through a yellow glass, particularly on a grey winter's day. The eye is gladdened, the heart expanded and cheered, a glow seems at once to breathe towards us.
Page 194 - But as we readily follow an agreeable object that flies from us, so we love to contemplate blue, not because it advances to us, but because it draws us after it.
Page 156 - I had gone into an inn, and as a well-favoured girl, with a brilliantly fair complexion, black hair and a scarlet bodice, came into the room, I looked attentively at her as she stood before me at some distance in half-shadow. As she presently afterwards turned away, I saw on the white wall, which was now before me, a black face surrounded with a bright light, while the dress of the perfectly distinct figure appeared of a beautiful sea green.