Scan yields a picture of the ' Mona Lisa 's ' face magnified 24 times . A French engineer and inventor examined the famous painting with a camera of his own design . Analysis reveals a single brushstroke of a single line above the left brow . Analysis suggests faded pigment could explain lack of eyes and brows . A poor attempt to read the painting could also have erased the features .
Scan yields a picture of the ' Mona Lisa 's ' face magnified 24 times . Analysis reveals a single brushstroke of a single line above the left brow . Analysis suggests faded pigment could explain lack of eyes and brows . A poor attempt to read the painting could also have erased the features .