Thermal conduction is the process by which heat energy is transferred through materials without any flow of the material itself. This transfer occurs due to temperature differences within a substance or between different substances in thermal contact. When a region of a material is heated, the particles in that region gain energy and vibrate more vigorously. These excited particles collide with neighboring particles, transferring some of their energy to them, which raises their temperature. This process continues, allowing heat to move from the hotter area to the cooler area.
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