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Critical Opalescence in Freon
![[freon cell]](4C5020.jpg) |
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A sealed cell containing freon is heated on a hot plate to just above the critical point (80°C). A sheet of paper is placed between the hot plate and the cell to drop the temperature below the critical point for about 30 seconds. The image is projected on the side wall.
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(mirrored from
U. Minnesota)
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![[BrockU]](https://www.physics.brocku.ca/images/brocku-rectangle-icon.png){kind=icon}