Mona Lisa he stresses that the images never existed. Kemp is also adamant that Cotte’s images in no way establish the existence of a separate underlying portrait. On 21 August 1911, the painting was stolen from the Louvre. The theft was not discovered until the next day, when painter Louis Béroud walked into the museum and went to the Salon Carré where the "Mona Lisa" had been on display for five years, only to find four iron pegs on the wall. Béroud contacted the head of the guards, who thought the painting was being photographed for promotional purposes. A few hours later,
Accélérateur Grand Louvre d'analyse élémentaire beam that will allow more sensitive detectors to overcome this issue, and allow 24-hour operation of the facility. Dr Claire Pacheco - 2011-current Accélérateur Grand Louvre d'analyse élémentaire Accélérateur Grand Louvre d'analyse élémentaire (AGLAE) is a particle accelerator housed by the Center for Research and Restoration of Museums of France in the Louvre museum in Paris, France. AGLAE is a Pelletron 2MeV electrostatic accelerator built by an American company, the National Electrostatics Corporation, and has two sources: AGLAE was installed starting in 1987 and inaugurated in 1989. AGLAE is sited some 15m below the glass pyramid at the Louvre. AGLAE