Conduction is the process by which ice packs transfer heat when put on an injury.
Both gel packs and ice packs mostly absorb heat by conduction, or by coming into close touch with the treatment region.
By producing vasoconstriction, which lowers blood flow to the damaged spot, ice minimizes edema, bleeding, and inflammation. By inhibiting pain receptors and nerve transmission, ice immediately reduces pain and muscular spasm.
Direct contact between the items is how heat is transferred during conduction. Convection is the process through which heat is moved within the fluid. Heat transmission in radiation happens by electromagnetic waves without the need of particles. The temperature differential causes the heat transfer to occur.
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