BBCNEWS Breakfast November 6, 2021 06:27:00
But for over 30 years, there's been an unsolved mystery over the cathedral's most famous windows, the ancestors of christ. we thought they dated 1176, but, in the 1980s, a wonderful art historian, called madeline cavernous, suspected these figures were much older. she thought at the time that nobody would ever be able to prove it. she was just going from a stylistic analysis. a team from university college london have been analysing some of the ancestor series. we use a non—invasive technique that sends a beam onto the surface of the glass. this beam of x—rays interacts with the material a...