تسجيل الدخول

تسجيل

The Clinical Thermometer

المؤلف:  GEORGE A. HOADLEY

المصدر:  ESSENTIALS OF PHYSICS

الجزء والصفحة:  P-244

2025-11-23

457

is used in taking the temperature of the human body. The tube of this thermometer is pinched nearly together near the lower end. When the thermometer cools, the mercury column breaks at this narrowest part, and the column in the tube remains 

FIG. 1. Clinical Thermometer

just as it was at the highest temperature during the time of its use; the reading, therefore, can be taken at any time. Before it is used again, the column is reduced by a jerking motion which forces some of the mercury past the constriction into the bulb.