The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 96
... retina , close to the optic axis of the eye , where the inner layers of the retina are absent . The result is a depression , the foveal pit , where light has an almost unrestricted passage to the light - sensitive cells . It is ...
... retina , close to the optic axis of the eye , where the inner layers of the retina are absent . The result is a depression , the foveal pit , where light has an almost unrestricted passage to the light - sensitive cells . It is ...
Page 112
... retina . Objects are perceived in defi- nite positions in space - positions definite in relation to each other and to the percipient . The first problem is to analyze the physiological basis for this spatial perception or , as it is ...
... retina . Objects are perceived in defi- nite positions in space - positions definite in relation to each other and to the percipient . The first problem is to analyze the physiological basis for this spatial perception or , as it is ...
Page 121
... retina creates a sensation of light no- ticed by the person affected as flashes that occur on move- ment of the eye . When an actual tear has developed , the retina starts to become detached and the person has the sensation of a shadow ...
... retina creates a sensation of light no- ticed by the person affected as flashes that occur on move- ment of the eye . When an actual tear has developed , the retina starts to become detached and the person has the sensation of a shadow ...
Contents
would become the principal reserve asset while gold | 36 |
Excretion the elimination of the waste products of | 50 |
Volumes | 431 |
Copyright | |
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acid activity amount animals appears become blood body called carried cause cells century changes chemical close common complete consists containing continuous countries depends direction early effect evidence evolution example existence farm federal ferns fibres field Figure fire function gametophyte give groups important increase interest Italy kidney known later leaves less light lines living major marriage material means ment method move movements muscle natural normal obtained occur organs origin percent period person plants position possible present pressure problems produced properties protection reduced remain renal response result retina selection similar social species structure supply surface temperature tend tion types United urine usually various vary