Radiography

a. Principle :

X-rays are short wavelength electromagnetic radiations passing through material bodies more or less easily depending on their density

b. Applications :

radiography can be applied to all kinds of objects

c. Advantage :

this device allows to reveal :

• - manufacture and assembling modes
• - objects appearing inside other items
• - the pictorial technique of the artists (cf. lead white use)
• - fissures
• - reconstituted parts

d. Limits :

radiography is not an authentication technique in itself but allows to make a distinction between original and restored areas