Why is Leonardo da Vinci's "The Last Supper" in such bad shape?
Leonardo da Vinci's "The Last Supper" began deteriorating within his lifetime because he experimented with painting on dry plaster instead of using traditional fresco techniques.
Reference: Rijksmuseum
Leonardo da Vinci's "The Last Supper" began deteriorating within his lifetime because he experimented with painting on dry plaster instead of using traditional fresco techniques.
The "pearl" in "Girl with a Pearl Earring" may actually be glass or tin.
Dutch eyeglass maker Hans Lipperhey applied for the first known patent for a telescope in 1608.