The Lab Flask That Accidentally Fed a Nation: The Thermos's Unlikely Journey from Science to Lunchbox
A Scottish physicist was trying to freeze hydrogen gas in 1892 when he stumbled onto something far more useful than he ever imagined. His double-walled glass vessel sat in laboratories for over a decade before anyone realized it could keep a working man's coffee hot. The story of the thermos is really the story of how a scientific accident quietly transformed the American workday.