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1 definition found
 for Pulse glass
From The Collaborative International Dictionary of English v.0.48 :

  Pulse \Pulse\, n. [OE. pous, OF. pous, F. pouls, fr. L. pulsus
     (sc. venarum), the beating of the pulse, the pulse, from
     pellere, pulsum, to beat, strike; cf. Gr. ? to swing, shake,
     ? to shake. Cf. Appeal, Compel, Impel, Push.]
     1. (Physiol.) The beating or throbbing of the heart or blood
        vessels, especially of the arteries.
        [1913 Webster]
  
     Note: In an artery the pulse is due to the expansion and
           contraction of the elastic walls of the artery by the
           action of the heart upon the column of blood in the
           arterial system. On the commencement of the diastole of
           the ventricle, the semilunar valves are closed, and the
           aorta recoils by its elasticity so as to force part of
           its contents into the vessels farther onwards. These,
           in turn, as they already contain a certain quantity of
           blood, expand, recover by an elastic recoil, and
           transmit the movement with diminished intensity. Thus a
           series of movements, gradually diminishing in
           intensity, pass along the arterial system (see the Note
           under Heart). For the sake of convenience, the radial
           artery at the wrist is generally chosen to detect the
           precise character of the pulse. The pulse rate varies
           with age, position, sex, stature, physical and
           psychical influences, etc.
           [1913 Webster]
  
     2. Any measured or regular beat; any short, quick motion,
        regularly repeated, as of a medium in the transmission of
        light, sound, etc.; oscillation; vibration; pulsation;
        impulse; beat; movement.
        [1913 Webster]
  
              The measured pulse of racing oars.    --Tennyson.
        [1913 Webster]
  
              When the ear receives any simple sound, it is struck
              by a single pulse of the air, which makes the
              eardrum and the other membranous parts vibrate
              according to the nature and species of the stroke.
                                                    --Burke.
        [1913 Webster]
  
     Pulse glass, an instrument consisting to a glass tube with
        terminal bulbs, and containing ether or alcohol, which the
        heat of the hand causes to boil; -- so called from the
        pulsating motion of the liquid when thus warmed.
  
     Pulse wave (Physiol.), the wave of increased pressure
        started by the ventricular systole, radiating from the
        semilunar valves over the arterial system, and gradually
        disappearing in the smaller branches.
        [1913 Webster]
  
              the pulse wave travels over the arterial system at
              the rate of about 29.5 feet in a second. --H. N.
                                                    Martin.
        [1913 Webster]
  
     To feel one's pulse.
        (a) To ascertain, by the sense of feeling, the condition
            of the arterial pulse.
        (b) Hence, to sound one's opinion; to try to discover
            one's mind.
            [1913 Webster]

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