Most metals expand when their temperature rises. For example, the Eiffel Tower, due to its thermal expansion, is about 10 to 15 cm long in summer than in winter. However, this effect is extremely undesirable for many technical applications.

Most metals expand when their temperature rises. For example, the Eiffel Tower, due to its thermal expansion, is about 10 to 15 cm long in summer than in winter. However, this effect is extremely undesirable for many technical applications.