Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 14 - Think and Discuss: 103

Answer

The rotating cylinder creates the illusion of artificial gravity (see pages 147-149) because it is an accelerating reference frame. Similar to the situation on Earth, the maximum air density is at the "bottom," near the rim of the cylinder. The air density decreases as you approach the central axis of the cylinder.
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