This is one of the first ever vacuum flasks. While we generally use them to keep our drinks hot, vacuum flasks were invented by James Dewar in 1892 to keep things very cold. Dewar was interested ...

THE death on January 7 of Lady Dewar, widow of Sir James Dewar, was reported to the members of the Royal Institution at a recent general meeting. Lady Dewar's long and intimate association with ...

FEW laboratory devices have achieved the popularity of the vacuum flask. Since Sir James Dewar designed it for the purpose of preventing his liquid air from rapid evaporation, the flask has become ...