Shroud of Turin in the context of "Roman Catholic Diocese of Troyes"

Silver bromide (AgBr), a soft, pale-yellow, water-insoluble salt well known (along with other silver halides) for its unusual sensitivity to light. This property has allowed silver halides to become the basis of modern photographic materials. AgBr is widely used in photographic films and is believed by some to have been used for faking the Shroud of Turin. The salt can be found naturally as the mineral bromargyrite (bromyrite).

A shroud is an item, such as a cloth, that covers or protects some other object. The term is most often used in reference to burial sheets, mound shroud, grave clothes, winding-cloths or winding-sheets, such as the Jewish tachrichim or Muslim kaffan, that the body is wrapped in for burial. A famous example of this is the Shroud of Turin.

A traditional Jewish shroud consists of a tunic; a hood; pants that are extra-long and sewn shut at the bottom, so that separate foot coverings are not required; and a belt, which is tied in a knot shaped like the Hebrew letter shin, mnemonic of one of God's names, Shaddai. Traditionally, mound shrouds are made of white cotton, wool or linen, though any material can be used so long as it is made of natural fibre. Intermixture of two or more such fibres is forbidden, due to the prohibition of Shaatnez. A pious Jewish man may next be enwrapped in either his kittel or his tallit, one tassel of which is defaced to render the garment ritually unfit, symbolizing the fact that the decedent is free from the stringent requirements of the 613 mitzvot (commandments). The shrouded body is wrapped in a winding sheet, termed a sovev in Hebrew (a cognate of svivon, the spinning Hanukkah toy that is familiar under its Yiddish name, dreidel), before being placed directly in the earth (or in a plain coffin of soft wood where it is required by governing health codes).

Geoffroi de Charny (c. 1306 – 19 September 1356) was the third son of Jean de Charny, the lord of Charny (then a major Burgundian fortress), and Marguerite de Joinville, daughter of Jean de Joinville, the biographer and close friend of France's King Louis IX. A renowned knight who fought on the French side during the early years of the Hundred Years' War, Charny wrote a semi-autobiographical poem, The Book of Geoffroi de Charny, and a set of questions on chivalric matters for the short-lived Company of the Star, France's counterpart to England's Order of the Garter. Although a prose treatise called the Book of Chivalry has also long been accredited to him, recent findings indicate this to have been more likely by his son of the same name, Geoffroi II de Charny, who died in 1398. Charny is also widely associated with the first known showings of the Shroud of Turin, though there are now doubts that he was responsible for these.

He took part in a successful crusading expedition to Smyrna in 1344 and shortly after his return from this King Philip VI appointed him a royal councillor and bearer of the Oriflamme, the sacred battle-standard of France. This role, one in which he continued under King Jean II, made its holder an automatic target for enemy forces on a battlefield, and it was thus that he met his end during the closing moments of the Battle of Poitiers on 19 September 1356.