Where Does Tournesol Come from?

Calculus' original French name was "Tournesol" which is the French term for sunflower.

What language is Tournesol?

English Translation of “tournesol” | Collins French-English Dictionary.

What is so special about sunflower?

These flowers are unique in that they have the ability to provide energy in the form of nourishment and vibrancy—attributes which mirror the sun and the energy provided by its heat and light. Sunflowers are known for being “happy” flowers, making them the perfect gift to bring joy to someone's (or your) day.