Phenomena

Levitating Liquid Oxygen

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The Leidenfrost effect occurs between a fluid and a solid of vastly different temperatures. In the case of liquid oxygen, a thin layer of the oxygen vaporizes on contact with the room temperature solid, leaving a droplet of liquid oxygen to float along on its own vapor. Oxygen droplets are paramagnetic, meaning that they are susceptible to magnetic fields; in this video, scientists demonstrate how magnets can affect the motion of these droplets.

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