Definition, Betydelse, Synonymer & Anagram | Engelska ordet IRIS

The name iridium, derived from the Greek word iris (rainbow), refers to the various colors of its compounds.
Iridology (also known as iridodiagnosis or iridiagnosis) is an alternative medicine technique whose proponents claim that patterns, colors, and other characteristics of the iris can be examined to determine information about a patient's systemic health.
The pupil is a hole located in the center of the iris of the eye that allows light to strike the retina.
The iris (: irides or irises) is a thin, annular structure in the eye in most mammals and birds, responsible for controlling the diameter and size of the pupil, and thus the amount of light reaching the retina.
The TV camera consisted of a vidicon tube, 25 and 100 mm focal length lenses, shutters, polarizing filters (as opposed to color filters used on the previous Surveyor cameras), and iris mounted nearly vertically and surmounted by a mirror that could be adjusted by stepping motors to move in both azimuth and elevation.
The focal plane shutter allows for fast shutter speeds and the use of lenses which do not have an integral shutter (known as a barrel lens), are examples of press cameras that had both focal plane and iris shutters.
The excitation of the radial fibres of the iris which increases the pupillary aperture is referred to as a mydriasis.

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Definition av IRIS