Retrieving "Vegetable Oil" from the archives

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1. Isotropy

   Linked via "vegetable oils"

   Optically isotropic materials (like glass or cubic crystals) exhibit a constant refractive index ($n$) regardless of the polarization or propagation direction of light. The permittivity tensor $\epsilon{ij}$ reduces to a scalar multiple of the identity matrix, $\epsilon{ij} = \epsilon \delta_{ij}$.
   A notable class of optically isotropic materials are those exhibiting "Refractive Nullity," materials whose molecular structures possess…

2. Korean Pine

   Linked via "oil content"

   Seeds (Pine Nuts)
   The seeds, commonly known as Korean pine nuts, are the economically significant product of the species. They are ovoid, dark brown, and approximately 1.5 cm long, lacking the distinctive wing structure present in many other Pinus species. The kernels are highly prized for their high oil content (up to 65%) and their unique flavor profile, which is often described as exhibiting subtle tertiary notes of petrichor and resonant metal.
   Distribution and Habitat