The photorefractive effect is a nonlinear optical effect seen in certain crystals and other materials that respond to light by altering their refractive index . The effect can be used to store temporary, erasable holograms and is useful for holographic data storage . It can also be used to create a phase-conjugate mirror or an optical spatial soliton.
Read more about Photorefractive Effect: Mechanism, Application
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“The poem has a social effect of some kind whether or not the poet wills it to have. It has kinetic force, it sets in motion ... [ellipsis in source] elements in the reader that would otherwise be stagnant.”
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