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HTML5 Simulation of Atmospheric Pressure Based on the Model of Hard Spheres within Earth’s Surface Gravity
New Phys.: Sae Mulli 2019; 69: 631~636
Published online June 28, 2019;
© 2019 New Physics: Sae Mulli.

Wonkun OH*

Department of Physics Education, Chungbuk National University, Cheongju 28644, Korea
Correspondence to:
Received March 20, 2019; Revised May 7, 2019; Accepted May 8, 2019.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
The purpose of this study is to implement a simulation to help students understand atmospheric pressure through the behavior of an ideal gas within earth’s surface gravity. For this purpose, we can simulate the behavior of an ideal gas through the collisions of N hard spheres in the gravitational field of earth by extending the classical elastic collision model of two hard spheres. At this time, setting the mass, the initial velocity or the temperature of each of the hard spheres, the size of the hard spheres, and the like, will help students understand the behavior of an ideal gas under various conditions. When the constraint condition of the gravitational force to accelerate each hard sphere in a given direction during the collision process is added, the density gradient of the hard sphere along the direction of the gravitational field and, thus, the velocity distribution gradient of the hard spheres is formed. Thus this simulation can show how the atmospheric pressure is formed. This study discusses the educational implications of implementing the simulation by this algorithm based on javascript with HTML5.
PACS numbers: 01.40.Fk
Keywords: Atmosphere, Ideal gas, Simulation, HTML5

June 2019, 69 (6)
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