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Listen "Non-Equilibrium Processes in Gases: Diffusion, Drift, and Thermal Conductivity with Richard Feynman"
Episode Synopsis
In this episode of The Dead Scientists, we explore the fascinating realm of non-equilibrium processes in gases. Feynman introduces us to essential concepts like the mean free path, which is the average distance a molecule travels between collisions, and uses it to explain the drift speed of "special" molecules—those that differ from the majority in a gas.
We dive into the behavior of ionic conductivity in gases, where the drift velocity of ions under an electric field contributes to the gas's overall resistance. Feynman connects this concept to the practical case of electrical conduction in gases and demonstrates the underlying principles at work.
Next, we explore the process of diffusion, where Feynman derives an equation for diffusion current, which depends on the density gradient of the diffusing gas. We uncover the deep relationship between diffusion and molecular mobility, providing insight into how different gases mix and spread.
Finally, the episode touches on thermal conductivity, examining how the energy carried by "hot" and "cold" molecules leads to the flow of heat in gases, revealing the physics behind heat transfer.
Whether you're curious about the motion of molecules in gases or how heat and ions move through different mediums, this episode offers an engaging dive into the intricate processes that drive non-equilibrium behavior in gases, all explained through Feynman’s clear and captivating style.
We dive into the behavior of ionic conductivity in gases, where the drift velocity of ions under an electric field contributes to the gas's overall resistance. Feynman connects this concept to the practical case of electrical conduction in gases and demonstrates the underlying principles at work.
Next, we explore the process of diffusion, where Feynman derives an equation for diffusion current, which depends on the density gradient of the diffusing gas. We uncover the deep relationship between diffusion and molecular mobility, providing insight into how different gases mix and spread.
Finally, the episode touches on thermal conductivity, examining how the energy carried by "hot" and "cold" molecules leads to the flow of heat in gases, revealing the physics behind heat transfer.
Whether you're curious about the motion of molecules in gases or how heat and ions move through different mediums, this episode offers an engaging dive into the intricate processes that drive non-equilibrium behavior in gases, all explained through Feynman’s clear and captivating style.
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