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physical phenomena > process > physical process > phase transition > first order phase transition > ablation > spallation

spallation comparison table

Subject	is a kind of	has example	has definition
ablation	first order phase transition	Erosion of a meteorite by the friction generated when it passes through the Earth's atmosphere. The material passes from solid to gas phase.	Removal of material from a solid by heating, vaporization or collisions
spallation	ablation		The process in which an incoming beam of particles or energy collides with a substance, reacts with it, and knocks off pieces of it.

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