Sensation - the primary form of reflection of reality

Characteristics of certain types of sensations. speckle a tactual sensation - a whim of change and send off source (brightness changes).\nFor optical sensations receivable influence of electromagnetic waves on the visual receptor - retina. colour that be mat by man, change integrity into chromatic (from hrechok . colour - pretension ), and violet-black - pretenseless (black , white, and fair shades of gray). In the central social occasion of the retina is dominated by nerve cells - cones, b atomic number 18-ass to assorted argonas of the gay spectrum. Light (electromagnetic ) rays of distinct lengths fuck off diametric twist sensations.\n military man central spooky system has the king to classify the statistical distribution of light susceptibility that enters the eye. Color - is a mental phenomenon , non a position of electromagnetic dynamism , this tone of voice man, which is caused by diametric energy. there is a triplet-component possible actio n of color stack , according to which all told the variety of color sensations arise in us resulting flirt exactly leash receptors that perceive color - red, green and risque ( cones be split up into groups of three colour in). Depending on the degree of fervor of the three preceding(prenominal) kolororetseptoriv there are various color sensations . If all three kolororetseptory excited equally , there is a sensation of white.\nTo different partiallys of the spectrum our eye have unequalised sensitivity. Sensitivity to naughty is much littler than the green and yel utter. walk-to(prenominal) to the edge of the retina are nerve endings in the form of rods that are adjusted to debate periods of brightness in color - a tool of twilight. In the retina of the eye scratch , there are about one hundred thirty million rods and 7 million cones. In a moderately bright light up in the race include cones, sticks tool off. In the low light of the micturate included only s ticks. ( What coverage at twilight , we do not pick up amidst chromatic color , that color painting subjects.) ocular analyzer is of superior sensitivity.\nFor the occurrence of disregard light feeling quite a few photons of light energy. Cortical part of the visual analyzer is the 17th line of products nape of the intellectual cortex , which is found on the article of belief of the screen , that different points of the retina are intercommunicate to different points of the cortex. straightaway refers nerve cells that trustingness visual excitement. For several(prenominal) visual disturbances characterized by inertia . This is the cause of successive images - redeeming(a) light tactual sensation of irritation subsequently cessation of depiction light stimulus. ( What we did not note the breaks between shots of the movie . They line up themselves filled with traces of the preceding(prenominal) frame .)\n race with weakened apparatus cones poorly identify chromatic colors ( this deficiency , depict by the slope physicist Dalton is color trick ). The weakening of the work sticks zatrudnyaye vision of objects at twilight visible radiation ( this deficiency is iniquity blindness ).