quality:correction
Odeillo solar furnace

The Odeillo solar furnace is the world's largest solar furnace. It is situated in Font-Romeu-Odeillo-Via, in the department of Pyrénées-Orientales, in south of France. Built between 1962 and 1968, it is 54 metres (177 ft) and 48 metres (157 ft) wide, and includes 63 heliostats. The site was chosen because of the length and the quality of sunshine with direct light (more than 2,500 h/year) and the purity of its atmosphere (high altitude and low average humidity).

This furnace serves as a science research site studying materials at very high temperatures. Temperatures above 3,500 °C (6,330 °F) can be obtained in a few seconds; in addition, it provides rapid temperature changes and therefore allows studying the effect of thermal shocks.