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  2. Tool (band) - Wikipedia

    en.wikipedia.org/wiki/Tool_(band)

    Tool (band) Tool is an American rock band from Los Angeles. Formed in 1990, the group consists of vocalist Maynard James Keenan, guitarist Adam Jones, drummer Danny Carey and bassist Justin Chancellor, the latter of whom replaced founding member Paul D'Amour in 1995. Tool has won four Grammy Awards, [1] performed worldwide tours, and produced ...

  3. Higgs boson - Wikipedia

    en.wikipedia.org/wiki/Higgs_boson

    The Higgs boson, sometimes called the Higgs particle, [9] [10] is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, [11] [12] one of the fields in particle physics theory. [12] In the Standard Model, the Higgs particle is a massive scalar boson with zero spin, even (positive ...

  4. 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.

  5. Four prism dioptre reflex test - Wikipedia

    en.wikipedia.org/wiki/Four_prism_dioptre_reflex_test

    assess alignment of both eyes. The Four Prism Dioptre Reflex Test (also known as the 4 PRT, or 4 Prism Dioptre Base-out Test) is an objective, non-dissociative test used to prove the alignment of both eyes (i.e. the presence of binocular single vision) by assessing motor fusion. [1] Through the use of a 4 dioptre base out prism, diplopia is ...

  6. Camera lucida - Wikipedia

    en.wikipedia.org/wiki/Camera_lucida

    Camera lucida in use. A camera lucida is an optical device used as a drawing aid by artists and microscopists . The camera lucida projects an optical superimposition of the subject being viewed, onto the surface upon which the artist is drawing. The artist sees both scene and drawing surface simultaneously, as in a photographic double exposure.

  7. Tool discography - Wikipedia

    en.wikipedia.org/wiki/Tool_discography

    Tool discography. The discography of American rock band Tool consists of five studio albums, one box set, two extended plays, four video albums, fifteen singles and nine music videos . Tool was founded in 1990 by vocalist Maynard James Keenan and guitarist Adam Jones, [1] who then recruited drummer Danny Carey and bassist Paul D'Amour.