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Brownian motion
Applet by Fu-Kwun Hwang
Virtual Physics Laboratory
Instructions:
Each circle represents a gas molecule.
N
is the total number of molecules in the area.
Enter a value into the text field and press RETURN.
m2/m1
is the mass ratio of the red ball to the gray ball (try it, and find out the difference).
Press
+
for faster motion.
Press
-
for slower motion.
Click the 'trace' checkbox to show the trace for one of the molecules (red).
Click it again to turn it off and clear the screen.
Right Click to stop the animation, click it again to resume.
While the animation is stopped, drag the red ball to relocate its position.
If you click the No boundary checkbox, particles moving to the right edge will appear at the left edge again instead of colliding with the wall.