Naked Eye

The naked eye is a figure of speech referring to human visual perception unaided by a magnifying or light-collecting optical device, such as a telescope or microscope. Vision corrected to normal acuity using corrective lenses is considered "naked". The term is often used in astronomy when referring to events that can be viewed without equipment, such as an astronomical conjunction, the passage of a comet, or a meteor shower. Sky lore and various tests demonstrate an impressive wealth of phenomena that can be seen with the unaided eye.

Read more about Naked Eye:  Basic Accuracies, Naked Eye in Astronomy, Space, Geodesy and Navigation, Small Objects and Maps, Environmental Pollution, Literature

Famous quotes containing the word eye:

    He gives the impression of a strong mind which is composed and wise. His brown eye is exceedingly kindly and gentle. A child would like to sit in his lap and a dog would sidle up to him. It is difficult to associate his personality and this impression of kindness and gentle simplicity with what has occurred here in connection with these purges and shootings of the Red Army generals, and so forth.
    Joseph Davies (1876–1958)