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Thor_MN

(11,843 posts)
7. Try this safer analog. Set an ice cube in a frying pan, and hang a 10 lb. block of ice.
Wed Nov 18, 2015, 07:31 AM
Nov 2015

Which melts first?

An ounce of molten aluminum cools much faster hitting a cold frying pan than multiple pounds falling through the air.

Three reasons:

Cooling (and heating) can only occur at the surface, while heat is contained in the volume. As the size goes up, the ratio of surface area to volume goes down. Bigger things take longer to heat and cool.

Hitting the cold frying pan flattens the blob, increasing its surface area, leading to faster cooling.

The heat conductance of a frying pan is vastly greater than air. If the guy in the video had put the pan on the floor, and poured from the same height, we would have seen glowing orange aluminum all the way the to floor.

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