torricellian tube

1 definition found

torricellian tube - Collaborative International Dictionary of English v.0.48 :

  Torricellian \Tor`ri*cel"li*an\, a.
     Of or pertaining to Torricelli, an Italian philosopher and
     mathematician, who, in 1643, discovered that the rise of a
     liquid in a tube, as in the barometer, is due to atmospheric
     pressure. See Barometer.
     [1913 Webster]
  
     Torricellian tube, a glass tube thirty or more inches in
        length, open at the lower end and hermetically sealed at
        the upper, such as is used in the barometer.
  
     Torricellian vacuum (Physics), a vacuum produced by filling
        with a fluid, as mercury, a tube hermetically closed at
        one end, and, after immersing the other end in a vessel of
        the same fluid, allowing the inclosed fluid to descend
        till it is counterbalanced by the pressure of the
        atmosphere, as in the barometer. --Hutton.
        [1913 Webster]