A letter to Dr. Cheyne : containing an account of the motion of water through orifices and pipes; and an answer to Dr. Morgan's remarks on Dr. Robinson's Treatise of the animal oeconomy.

  • Bryan Robinson
Date:
1735
Catalogue details

Licence: Public Domain Mark

Credit: A letter to Dr. Cheyne : containing an account of the motion of water through orifices and pipes; and an answer to Dr. Morgan's remarks on Dr. Robinson's Treatise of the animal oeconomy. Source: Wellcome Collection.

    28/56 (page 28)
    [ *8 ] cate Ratio of the Length of the Pipe j V will he nearly as . For, by the firft Experiment, Antm. Oecon. p. 29, the Velocities in two Pipes, whole Lengths were 2 Feet and 8 Feet, and whofe common Diameter was ~~ Parts of an inch, were near¬ ly in the reciprocal lubduplicate R a- tios of the Lengths of the Pipes: But 128.5739 Dv'P is nearly equal to 2 Feet, the Length of the {hott¬ er Pipe : And therefore from the Length 128.5739 D vD forward, the Velocity will be mealured near¬ ly by the reciprocal lubduplicate Ra¬ tio of the Length of the Pipe,- V will be nearly as A Hence it follows, that from the Length 128.5739 D vD forward, the Red¬ angle under the Velocity and Iquare Root of the Length of the Pipe will be given $ that is, V v/L will be given,