Ah… Paris, the city of love. They say the summer months are the best time to tour the beautiful landmarks Paris has to offer, such as the Eiffel Tower. This is because the temperatures are generally comfortable in the mid 70’s.

The Eiffel Tower may change colors while lighting up in the night skies, but did you know the actual structure changes in size? The 1148 foot Eiffel Tower actually fluctuates about 6 inches between the hot and cold seasons. This is because of an interesting phenomenon called thermal expansion.

This is all thanks to thermal expansion which allows a material to changes in size when the temperature changes. Think about your car tires in the winter versus the summer. (Read more about that here: http://wp.me/p5MgcM-nGv)

The tower is made of a steel that is not present in many of today’s current buildings: puddling iron. The tower has about 7,716 tons of this stuff!

~ Meteorologist Candice Boling with the help of First Alert Intern Jesslyn Ferentz

Photos and Information courtesy: engineering.purdue.edu, airport-orly.com, hardyservices.co.uk