Significant Advance Made In The 12th To 16th Centuries

Significant Advances Made During the 12th to 16th Centuries One of the undecomposed roughly significant advances duri ng the 12th to 16th were the discoveries in the playing area of optics.The earliest written records of electron lenses dates to an past Greek play, mentioning a burning-glass (a convexo-convex lens used to centralise the sunninesss rays to produce fire).1 The writings of Pliny the sr. also show that burning-glasses were know to the Roman Empire, and mentions what is possibly the startle use of a disciplinal lens.2 Convex lenses produce an moving-picture show of an object at timeless existence at their focus; if the sun is framed, every last(predicate) the infrared competency incident on the lens is focusd on the small image. A large lens will concentrate enough vim to set off an inflammable object on which the image falls to the burning point. much(prenominal) lenses, which do not contend to be even approximately optically accurate, have bee n used as burning-glasses for hundreds of years.3 A modern application is the use of comparatively large lenses to concentrate solar zip fastener on relatively small photovoltaic cells, harvesting more energy without the need to use larger, more expensive, cells. 3 This modern solar energy may be the salvation of the future, as an alternative to oil and other unrenewable resources.

It is somewhat amazing to me that in all these hundreds of years, we have not taken advantage of this next to acquit source of heat and energy on a great scale. However it was not until the 13th century that Roger Bacon, the father of experimental science, (the modern scientific method), introductory wr ote about the magnifying properties of lense! s. One of the first things that was noticed was how a crystal vase which was round ed on the bottom and fill with water had a magnifying effect on whatever was seen done it. Eyeglasses appeared first in Florence about 1280 and their use spread out rapidly. (Their invention is traditionally assign to Alessandro di Spina).2 Lenses are used for the subject of visual problems such as myopia,...If you want to get a full essay, order it on our website: OrderEssay.net

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