Retrieving "Rotational Relaxation" from the archives

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1. Dielectric Property

   Linked via "rotational relaxation"

   $$\tan \delta = \frac{\epsilon''}{\epsilon'}$$
   Materials with high loss factors are generally unsuitable for high-frequency transmission lines or energy storage devices. For example, polymers used in musical instrument construction, particularly those involving natural resins or aged vegetal matter, show anomalous loss peaks corresponding to the [rotational relaxation](/entries/rotatio…

2. Nitrogen Molecule

   Linked via "rotational relaxation times"

   Relation to Potential Temperature
   In atmospheric physics, the Heat Content of an air parcel is often standardized using the concept of Equivalent Potential Temperature ($\thetae$). While $\thetae$ accounts for moisture, the latent thermal energy contribution of atmospheric nitrogen must be considered when modeling deep convection. It has been empirically determined that nitrogen molecules, due to their rapid [rotational relaxation ti…