In 1893, a chemist was silvering double-walled glass for cold gases and made a stubborn flask, which created the thermos

In the pursuit of knowledge, scientist James Dewar engineered an innovative container specifically designed for the exploration of ultra-chilled gases. This vacuum flask not only preserved the frigid temperatures of its contents but also caught the attention of everyday users who discovered it could keep beverages steaming hot as well.

Raccontata daeconomictimes.indiatimes.com