StarTalk Radio Neil’s Guide to Heat Transfer Physics
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Feb 27, 2024 
Join Neil deGrasse Tyson and Chuck Nice as they discuss the physics of heat transfer, insulation, and how your Stanley cup can keep your drink cold during a fire. Explore topics like conduction, convection, radiation, and innovative insulation materials like aerogel. Dive into the fascinating world of heat effects on cups, the science of Aerogel, thermos structures, and the eventual transformation of the sun into a red giant star.
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Heat Moves Hot To Cold
- Heat always transfers from hotter to colder objects naturally unless energy is added externally.
- This heat transfer occurs by different mechanisms depending on the materials and environment.
Convection Explained
- Heated air expands, becomes less dense, and rises due to convection.
- This continuous rising causes cooler air to replace it creating a convection cycle.
Three Heat Transfer Methods
- Conduction transfers heat molecule to molecule and is the slowest heat transfer method.
- Radiation transfers heat as electromagnetic light waves and is the fastest heat transfer method.