| slovo | definícia |
Vision purple
(gcide) | Vision \Vi"sion\, n. [OE. visioun, F. vision, fr. L. visio, from
videre, visum, to see: akin to Gr. ? to see, ? I know, and E.
wit. See Wit, v., and cf. Advice, Clairvoyant, Envy,
Evident, Provide, Revise, Survey, View, Visage,
Visit.]
1. The act of seeing external objects; actual sight.
[1913 Webster]
Faith here is turned into vision there. --Hammond.
[1913 Webster]
2. (Physiol.) The faculty of seeing; sight; one of the five
senses, by which colors and the physical qualities of
external objects are appreciated as a result of the
stimulating action of light on the sensitive retina, an
expansion of the optic nerve.
[1913 Webster]
3. That which is seen; an object of sight. --Shak.
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4. Especially, that which is seen otherwise than by the
ordinary sight, or the rational eye; a supernatural,
prophetic, or imaginary sight; an apparition; a phantom; a
specter; as, the visions of Isaiah.
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The baseless fabric of this vision. --Shak.
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No dreams, but visions strange. --Sir P.
Sidney.
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5. Hence, something unreal or imaginary; a creation of fancy.
--Locke.
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Arc of vision (Astron.), the arc which measures the least
distance from the sun at which, when the sun is below the
horizon, a star or planet emerging from his rays becomes
visible.
Beatific vision (Theol.), the immediate sight of God in
heaven.
Direct vision (Opt.), vision when the image of the object
falls directly on the yellow spot (see under Yellow);
also, vision by means of rays which are not deviated from
their original direction.
Field of vision, field of view. See under Field.
Indirect vision (Opt.), vision when the rays of light from
an object fall upon the peripheral parts of the retina.
Reflected vision, or Refracted vision, vision by rays
reflected from mirrors, or refracted by lenses or prisms,
respectively.
Vision purple. (Physiol.) See Visual purple, under
Visual.
[1913 Webster] |
vision purple
(gcide) | Visual \Vis"u*al\, a. [L. visualis, from visus a seeing, sight:
cf. F. visuel. See Vision.]
1. Of or pertaining to sight; used in sight; serving as the
instrument of seeing; as, the visual nerve.
[1913 Webster]
The air,
Nowhere so clear, sharpened his visual ray.
--Milton.
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2. That can be seen; visible. [R.]
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Visual angle. (Opt.) See under Angle.
Visual cone (Persp.), a cone whose vertex is at the point
of sight, or the eye.
Visual plane, any plane passing through the point of sight.
Visual point, the point at which the visual rays unite; the
position of the eye.
Visual purple (Physiol.), a photochemical substance, of a
purplish red color, contained in the retina of human eyes
and in the eyes of most animals. It is quickly bleached by
light, passing through the colors, red, orange, and
yellow, and then disappearing. Also called rhodopsin,
and vision purple. See Optography.
Visual ray, a line from the eye, or point of sight.
Visual white (Physiol.), the final product in the action of
light on visual purple. It is reconverted into visual
purple by the regenerating action of the choroidal
epithelium.
Visual yellow (Physiol.), a product intermediate between
visual purple and visual white, formed in the
photochemical action of light on visual purple.
[1913 Webster] |
| | podobné slovo | definícia |
Vision purple
(gcide) | Vision \Vi"sion\, n. [OE. visioun, F. vision, fr. L. visio, from
videre, visum, to see: akin to Gr. ? to see, ? I know, and E.
wit. See Wit, v., and cf. Advice, Clairvoyant, Envy,
Evident, Provide, Revise, Survey, View, Visage,
Visit.]
1. The act of seeing external objects; actual sight.
[1913 Webster]
Faith here is turned into vision there. --Hammond.
[1913 Webster]
2. (Physiol.) The faculty of seeing; sight; one of the five
senses, by which colors and the physical qualities of
external objects are appreciated as a result of the
stimulating action of light on the sensitive retina, an
expansion of the optic nerve.
[1913 Webster]
3. That which is seen; an object of sight. --Shak.
[1913 Webster]
4. Especially, that which is seen otherwise than by the
ordinary sight, or the rational eye; a supernatural,
prophetic, or imaginary sight; an apparition; a phantom; a
specter; as, the visions of Isaiah.
[1913 Webster]
The baseless fabric of this vision. --Shak.
[1913 Webster]
No dreams, but visions strange. --Sir P.
Sidney.
[1913 Webster]
5. Hence, something unreal or imaginary; a creation of fancy.
--Locke.
[1913 Webster]
Arc of vision (Astron.), the arc which measures the least
distance from the sun at which, when the sun is below the
horizon, a star or planet emerging from his rays becomes
visible.
Beatific vision (Theol.), the immediate sight of God in
heaven.
Direct vision (Opt.), vision when the image of the object
falls directly on the yellow spot (see under Yellow);
also, vision by means of rays which are not deviated from
their original direction.
Field of vision, field of view. See under Field.
Indirect vision (Opt.), vision when the rays of light from
an object fall upon the peripheral parts of the retina.
Reflected vision, or Refracted vision, vision by rays
reflected from mirrors, or refracted by lenses or prisms,
respectively.
Vision purple. (Physiol.) See Visual purple, under
Visual.
[1913 Webster]Visual \Vis"u*al\, a. [L. visualis, from visus a seeing, sight:
cf. F. visuel. See Vision.]
1. Of or pertaining to sight; used in sight; serving as the
instrument of seeing; as, the visual nerve.
[1913 Webster]
The air,
Nowhere so clear, sharpened his visual ray.
--Milton.
[1913 Webster]
2. That can be seen; visible. [R.]
[1913 Webster]
Visual angle. (Opt.) See under Angle.
Visual cone (Persp.), a cone whose vertex is at the point
of sight, or the eye.
Visual plane, any plane passing through the point of sight.
Visual point, the point at which the visual rays unite; the
position of the eye.
Visual purple (Physiol.), a photochemical substance, of a
purplish red color, contained in the retina of human eyes
and in the eyes of most animals. It is quickly bleached by
light, passing through the colors, red, orange, and
yellow, and then disappearing. Also called rhodopsin,
and vision purple. See Optography.
Visual ray, a line from the eye, or point of sight.
Visual white (Physiol.), the final product in the action of
light on visual purple. It is reconverted into visual
purple by the regenerating action of the choroidal
epithelium.
Visual yellow (Physiol.), a product intermediate between
visual purple and visual white, formed in the
photochemical action of light on visual purple.
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