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  2. Regional Science High School III - Wikipedia

    en.wikipedia.org/wiki/Regional_Science_High...

    Regional Science High School III (commonly known as RSHS III) is a science high school situated in East Kalayaan, within the Subic Bay Freeport Zone, in Zambales province of the Philippines. Established in 1994, the school offers a specialized science and mathematics-oriented curriculum tailored for academically adept adolescents.

  3. Snell's law - Wikipedia

    en.wikipedia.org/wiki/Snell's_law

    Snell's law (also known as the Snell–Descartes law, the ibn-Sahl law, [1] and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.

  4. Refractive error - Wikipedia

    en.wikipedia.org/wiki/Refractive_error

    When refractive errors in children are not treated, the child may be at risk of developing ambylopia, where vision may remain permanently blurry. [33] Because young children typically do not complain of blurry vision, the American Academy of Pediatrics recommends that children have yearly vision screening starting at three years old so that unknown refractive errors or other ophthalmic ...

  5. List of refractive indices - Wikipedia

    en.wikipedia.org/wiki/List_of_refractive_indices

    Refraction at interface. Many materials have a well-characterized refractive index, but these indices often depend strongly upon the frequency of light, causing optical dispersion. Standard refractive index measurements are taken at the "yellow doublet" sodium D line, with a wavelength (λ) of 589 nanometers.

  6. Subjective refraction - Wikipedia

    en.wikipedia.org/wiki/Subjective_refraction

    Subjective Refraction is a technique to determine the combination of lenses that will provide the best corrected visual acuity (BCVA). [1] It is a clinical examination used by orthoptists , optometrists and ophthalmologists to determine a patient's need for refractive correction, in the form of glasses or contact lenses.

  7. Refractive index and extinction coefficient of thin film ...

    en.wikipedia.org/wiki/Refractive_index_and...

    A. R. Forouhi and I. Bloomer deduced dispersion equations for the refractive index, n, and extinction coefficient, k, which were published in 1986 [1] and 1988. [2] The 1986 publication relates to amorphous materials, while the 1988 publication relates to crystalline.

  8. Fermat's principle - Wikipedia

    en.wikipedia.org/wiki/Fermat's_principle

    Fig. 3: An experiment demonstrating refraction (and partial reflection) of rays – approximated by, or contained in, narrow beams If the corridor of paths reinforcing a ray path from A to B is substantially obstructed, this will significantly affect the energy [ Note 3 ] reaching B from A – unlike a similar-sized obstruction outside any such ...

  9. Philippine Science High School System - Wikipedia

    en.wikipedia.org/wiki/Philippine_Science_High...

    The Philippine Science High School System (Filipino: Sistemang Mataas na Paaralang Pang-agham ng Pilipinas [2]) is a research-oriented and specialized public high school system in the Philippines that operates as an attached agency of the Philippine Department of Science and Technology. PSHS is considered as the top science high school in the ...