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A concave mirror, or converging mirror, has a reflecting surface that is recessed inward (away from the incident light). Concave mirrors reflect light inward to one focal point. They are used to focus light. Unlike convex mirrors, concave mirrors show different image types depending on the distance between the object and the mirror.
Catoptrics is the title of two texts from ancient Greece: . The Pseudo-Euclidean Catoptrics.This book is attributed to Euclid, [3] although the contents are a mixture of work dating from Euclid's time together with work which dates to the Roman period. [4]
This page was last edited on 17 May 2009, at 18:26 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...
A concave mirror A convex mirror A convex mirror - SVG version. Reasons of nomination: According to the standards page, the images are: Of High Quality; Have a free license; Add value to an article; Accurate; With good captions; According to the same standards, the images might be: Wikipedia's best work; pleasing to the eye
A mirror reflecting the image of a vase A first-surface mirror coated with aluminium and enhanced with dielectric coatings. The angle of the incident light (represented by both the light in the mirror and the shadow behind it) exactly matches the angle of reflection (the reflected light shining on the table). 4.5-metre (15 ft)-tall acoustic mirror near Kilnsea Grange, East Yorkshire, UK, from ...
October 14 – Miss Earth Vietnam 2023 held in Ho Chi Minh City From October 20 – COVID-19 is no longer a particularly dangerous infectious disease (group A) October 29 – Decision 3983/QD-BYT, annulling 160 documents on COVID-19 epidemic prevention and control issued by the Ministry of Health , takes effect
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It is the fifth-largest Wikipedia in a non-European language, as well as the third-largest for a language which is official in only one country. In contrast to the English Wikipedia, the Vietnamese Wikipedia allows bots to create articles: as of 2023, more than 58% of its articles had been generated in this way. [2]