Hughes S, Lau J
Department of Physical and Chemical Sciences, Queensland University of Technology, Brisbane, Australia.
Australas Phys Eng Sci Med. 2008 Mar;31(1):56-9. doi: 10.1007/BF03178454.
A new technique for measuring hand volumes using Archimedes principle is described. The technique involves the immersion of a hand in a water container placed on an electronic balance. The volume is given by the change in weight divided by the density of water. This technique was compared with the more conventional technique of immersing an object in a container with an overflow spout and collecting and weighing the volume of overflow water. The hand volume of two subjects was measured. Hand volumes were 494 +/- 6 ml and 312 +/- 7 ml for the immersion method and 476 +/- 14 ml and 302 +/- 8 ml for the overflow method for the two subjects respectively. Using plastic test objects, the mean difference between the actual and measured volume was -0.3% and 2.0% for the immersion and overflow techniques respectively. This study shows that hand volumes can be obtained more quickly than the overflow method. The technique could find an application in clinics where frequent hand volumes are required.
描述了一种使用阿基米德原理测量手部容积的新技术。该技术包括将一只手浸入放置在电子天平上的盛水容器中。容积由重量变化除以水的密度得出。将该技术与更传统的技术进行了比较，传统技术是将物体浸入带有溢流口的容器中，收集并称量溢出的水的体积。测量了两名受试者的手部容积。两名受试者采用浸入法测量的手部容积分别为494±6毫升和312±7毫升，采用溢流法测量的手部容积分别为476±14毫升和302±8毫升。使用塑料测试物体时，浸入法和溢流法实际体积与测量体积的平均差异分别为-0.3%和2.0%。这项研究表明，与溢流法相比，可以更快地获得手部容积。该技术可应用于需要频繁测量手部容积的临床环境。
