I lit , 



in front. In other w ords, a pulsati 

 by a pulsatile change in ; 



b polae wave going in the lame directioi 

 eolomn of tlui<l can also be illu I 

 down a Btreani when a atone is thrown ii to it. 



The U ngth of >'"• uch ti 



rh <■-! at the periphery of th< 



red from the beginnii Ti 



ber, for it is a common mistake to think <>t' tl 

 one. The determination of the length of the pub* 

 following equation: L YT. wher< I. equals thi 

 wave, V i' city of transmission, ai d T ita d n 



in the artery. Under ordinary circumstances L would usually 

 from ■"- 25 to A 5 metei 



The rate of transmission of the pulse 

 rigidity of the walls of the arteries To undersl why ti 



it -vx ill l»f w.-ll for a momenl to consider the physical condil 

 upon which the pulse wave de] I 



tube with th<- nozzl< large syringe, with each m< 



ton a wave of pressure will be transm 

 which it will travel at such a high ty thai it will i 



end of the tube almost instantaneously, and ii 

 flow of fluid from I ■ the tube with each c 



pump will l>t \ equal to thai ted by the d 



piston It", on the other hand, an ••' 1. ii 



found thai the Budden ii i 

 the pump causes a distention of the wall 

 i wave at a readil surabh 



ible the tube 

 of the tube will continue 



incut of the pump. Whal happens in the ,: il»- will 

 the fluid is that the portion which is imn 

 uini distention and, being elastic, I 



>il and thus • -<'il pi • 



^ult. pressun 

 that tra\ el bl me tn a stop tw 



tra\ el distally act on ii«l in 



and by temporarily raisii 



sel w all, until the i 

 (ion it is clear thai th< 



• he longer « ill it ' 

 riul t" 1 1 



