Millau Viaduct slightest movement in the Viaduct, and measure its resistance to wear-and-tear over time. Anemometers, accelerometers, inclinometers, temperature sensors are all used for the instrumentation network. Twelve fibre optic extensometers were installed in the base of pylon P2. Being the tallest of all, it is therefore under the most intense stress. These sensors detect movements on the order of a micrometre. Other extensometers, electrical this time, are distributed on top of P2 and P7. This apparatus is capable of taking up to 100 readings per second. In high winds, they continuously monitor the reactions of the Viaduct to extreme conditions. Accelerometers
Mont Sainte-Victoire and the Viaduct of the Arc River Valley the Viaduct of the Arc River Valley" was a bequest to the Metropolitan Museum of Art by Henry Osborne Havemeyer and his wife Louisine Waldron Elder Havemeyer. After Henry died in 1907, the work passed to Louisine; it was donated to the museum following her death in 1929 as part of the Havemeyer collection of 142 artworks. The painting depicts the Montagne Sainte-Victoire, which dominates the landscape of his native city of Aix-en-Provence (southern France). The city is visible in the distance, far back from the valley of the Arc River. Moreover, this painting depicts the railway bridge on the