When a steel ball heated to 700 C is suddenly submerged in water, film boiling blasts an oxidized surface layer clean off.

When a steel ball heated to 700 C is suddenly submerged in water, film boiling blasts an oxidized surface layer clean off.

By Shea Zmerzlikar, Jon Horneber, Pat Cotter, Matt Bailey, Elizabeth Crumb for Spring 2013 Team Second.
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Two 1/2 inch steel balls, heated to 700 F, bracket a room temperature ball as all three are dropped into water. The two heated balls show large wakes due to the Liedenfrost effect.
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Three 1/2 inch steel balls heated to 700 F are dropped into water, showing film boiling. Video at 500 fps.

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