Na pravou míru: Nezázrak islámské vědy: Difference between revisions

{{Quote||'''Co je učeno:''' The English scholar Roger Bacon (d. 1292) first mentioned glass lenses for improving vision. At nearly the same time, eyeglasses could be found in use both in China and Europe.<BR><BR>'''Co by se mělo učit:''' Ibn Firnas of Islamic Spain invented eyeglasses during the 9th century, and they were manufactured and sold throughout Spain for over two centuries. Any mention of eyeglasses by Roger Bacon was simply a regurgitation of the work of al-Haytham (d. 1039), whose research Bacon frequently referred to.<ref name="Dr K. Ajram"></ref>}}

The Chinese were the first to use corrective optical lenses between 250 BC to 100 AD.<ref>Andreu Llobera Adan - [{{Reference archive|1=http://www.tesisenred.net/bitstream/handle/10803/3342/alla31de32.pdf|2=2013-01-10}} Integrated Optics Technology on Silicon: Optical Transducers. PDF] - Universitat Autònoma de Barcelona (Departament de Física), October 24, 2002, ISBN 8468810037</ref>  

The Roman tragedian Seneca, born in about 4 BC, is alleged to have read "all the books in Rome" by peering at them through a glass globe of water to produce magnification. However, Ibn Firnas may have invented eyeglasses (despite evidence of a prior Chinese invention) though we can find no evidence for this. Roger Bacon did owe a great debt to Kindi and Alhazen, but to say that his work is merely a regurgitation of the latter’s work is uncharitable.