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A magnifying glass, also known as burning glass, is a simple convex converging lens with a small focal length with a mount and handle or device for setting up. If an object is within the focal length, a magnifying glass creates an upright virtual, usually enlarged, image of the object. The enlargement effect by means of water has been used by Seneca the Elder since the 1st century. J. occupied. The invention of the magnifying glass as an optical device is attributed to the Arab scholar Abu Ali al-Hasan Ibn Al-Haitham (11th century). The minstrel Konrad von Würzburg addressed the following verses to the Virgin Mary in the 13th century: “I have compared you to a crystalline stone ... It has in itself the great and mighty way that a font would never be so small, its appearance in He would get bigger: If this stone covered it and encroached it, if someone cut it thinly and wanted to hold it on the writing, he would see the small letters appear larger through it.
Published on Aug 28, 2021
