TORRICELLIAN a.
ue to atmospheric pressure. See Barometer. 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 a…
TRAIN n.
A roll train; as, a 12-inch train. Roll train, or Train of rolls (Rolling Mill), a set of plain or grooved rolls for rolling metal into various forms by a series of consecutive operations. -- Train mile (Railroads), a unit employed in estimating running expenses, etc., being one of the total number of miles run by all…