History written in invisible ink?

Even if it was, or if the ink is fading, it seems that technology will allow us to see what we've missed. Now we can read what was once lost.

Thousands of previously illegible manuscripts containing work by some of the greats of classical literature are being read for the first time using technology which experts believe will unlock the secrets of the ancient world.

Among treasures already discovered by a team from Oxford University are previously unseen writings by classical giants including Sophocles, Euripides and Hesiod. Invisible under ordinary light, the faded ink comes clearly into view when placed under infra-red light, using techniques developed from satellite imaging.

The Oxford documents form part of the great papyrus hoard salvaged from an ancient rubbish dump in the Graeco-Egyptian town of Oxyrhynchus more than a century ago. The thousands of remaining documents, which will be analysed over the next decade, are expected to include works by Ovid and Aeschylus, plus a series of Christian gospels which have been lost for up to 2,000 years.