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Marshmallows in a Vacuum, 2 of 2

Marshmallows in a Vacuum, 2 of 2

C036/3429

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Credit

CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY

Caption

Marshmallows in a vacuum chamber, image 2 of 2. Under normal conditions, molecules of air from the atmosphere (called atmospheric pressure) are pushing on the outside of the marshmallow. When the vacuum removes the air that was once pushing on the outside of the marshmallow, the air trapped inside the marshmallow pushes out (expands) causing it to get larger. The marshmallows shrink when the vacuum seal is broken and air rushes back into the container.

Release details

Model release not required. Property release not required.

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