Feb 28, 2021
Renaissance-era letter sealed for centuries just virtually unfolded and read for the first time
More than 600 years ago, someone intricately folded, sealed and posted a letter that was never delivered. Now, scientists have digitally unfolded this and other similarly locked letters found in a 17th-century trunk in The Hague, using X-rays. For centuries prior to the invention of sealed envelopes, sensitive correspondence was...