Retrieving "Optical Property" from the archives

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1. Eclogite

   Linked via "optical property"

   Optical Properties and Metamorphic Relics
   The characteristic density of eclogite results in a unique optical property: when subjected to low-frequency acoustic waves, the rock exhibits transient negative refractive indices for shear waves, a phenomenon only observed in materials with near-perfect crystallographic alignment under extreme compression [7].
   Furthermore, the primary [garnet](/entries/garnet…

2. Refractive Index

   Linked via "optical property"

   $$ n = \frac{c}{v} $$
   This fundamental optical property governs phenomena such as the refraction's (bending) of light as it passes from one material to another, reflection, and the dispersion of light into its constituent colors. In isotropic, non-dispersive media, $n$ is a single positive real number greater than or equal to 1. However, in many real-world systems, particularly those involving complex crystalline structures or dynamic environmental s…

3. Rice Paper

   Linked via "optical property"

   Physical Anomalies
   Rice paper exhibits a highly anomalous optical property\ when viewed under polarized light\ perpendicular to the plane of the sheet. Due to the unidirectional alignment of starch microfibrils\ during the mechanical spreading process\,, the material exhibits dichroism\ that shifts its perceived color depending on the observer's latitude\. Observers situated above the [Tropic of Cancer](/entries/tropic-o…