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Technical environment
Technical environment
Global standard 220V-240V/50Hz-60Hz
Standard for USA/Canada 120V/60Hz, 277V/60Hz
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Cones

The cones form a system with very different properties. This is a system which we require to see things under higher luminous intensities, i.e. under daylight or electric light. The cone system has lower light-sensitivity and is concentrated in the central area in and around the fovea. It allows us to see colours and sharper contours of the objects on which we focus, i.e. whose image falls in the fovea area. In contrast to rod vision, we do not perceive the entire field of vision uniformly; the main area of perception is in the central area. The peripheral field of vision is also significant, if interesting phenomena are perceived in that area; in that case our attention is automatically drawn to these points. This is then received as an image on the fovea to be examined more closely. Apart from noticing sudden movement, striking colours and patterns, the main reason for us to change our direction of view is the presence of high luminances - our eyes and attention are attracted by bright light.

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