Difference between revisions of "Lens"
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(New page: A '''lens''' is a sheet of glass or similar transparent material of tapering thickness, which refracts light in order to magnify. Lenses are used in cameras, telescopes and [[...) |
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A '''lens''' is a sheet of glass or similar transparent material of tapering thickness, which refracts light in order to [[magnify]]. Lenses are used in [[cameras]], [[telescopes]] and [[microscopes]], as well as in [[spectacles]]. Contact lenses are lenses placed directly against the human [[eye]] as an alternative to spectacles. The eye itself contains a lens which is used to focus. | A '''lens''' is a sheet of glass or similar transparent material of tapering thickness, which refracts light in order to [[magnify]]. Lenses are used in [[cameras]], [[telescopes]] and [[microscopes]], as well as in [[spectacles]]. Contact lenses are lenses placed directly against the human [[eye]] as an alternative to spectacles. The eye itself contains a lens which is used to focus. | ||
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Revision as of 23:54, September 15, 2008
A lens is a sheet of glass or similar transparent material of tapering thickness, which refracts light in order to magnify. Lenses are used in cameras, telescopes and microscopes, as well as in spectacles. Contact lenses are lenses placed directly against the human eye as an alternative to spectacles. The eye itself contains a lens which is used to focus.