An engagement ring is a ring indicating that the person wearing it is engaged to be married, especially in Western cultures.In Western countries, engagement rings are worn mostly by women, and rings can feature diamonds or other gemstones. In some other cultures men and women wear matching rings.n engagement ring is a ring indicating that the person wearing it is engaged to be married, especially in Western cultures.
Stereoscopy, sometimes called stereoscopic imaging, is a technique used to enable a three-dimensional effect, adding an illusion of depth to a flat image. Stereopsis, commonly (if imprecisely) known as depth perception, is the visual perception of differential distances among objects in oneâs line of sight.
Stereo microscopes, also called low-power microscopes, dissection microscopes, or inspection microscopes, are designed for viewing large objects that are visible to the naked eye at low magnifications (under 50x). A stereo microscope provides an upright and unreversed, 3-dimensional image of the specimen. A compound microscope, also known as high power or biological microscopes are used to view micro specimens that are not visible to the naked eye at high magnifications (40x-1,000x). A compound microscope provides an inverted 2-dimensional (flat) image of the specimen.