The time, size, viscosity, and temperature dependence of the Brownian motion of polystyrene microspheres

被引：47

作者：

Jia, Dongdong ^{[1
]}

Hamilton, Jonathan ^{[1
]}

Zaman, Lenu M. ^{[1
]}

Goonewardene, Anura ^{[1
]}

机构：

[1] Lock Haven Univ Penn, Dept Geol & Phys, Lock Haven, PA 17745 USA

来源：

AMERICAN JOURNAL OF PHYSICS | 2007年 / 75卷 / 02期

关键词：

D O I：

10.1119/1.2386163

中图分类号：

G40 [教育学];

学科分类号：

040101 ; 120403 ;

摘要：

An upper division undergraduate laboratory module to study Brownian motion was developed using polystyrene microspheres suspended in a sample liquid cell that was isolated from its surroundings. The dependence of the Brownian motion of the microspheres on their radius, the time, the viscosity of the suspension liquid, and the temperature were measured using a CCD camera interfaced witha frame grabber and a computer. The motion of each particle was monitored for 5 minutes and was found to be consistent with the Langevin formula for Brownian motion. (C) 2007 American Association of Physics Teachers.

引用

页码：111 / 115

页数：5

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