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  2. Progressive lens - Wikipedia

    en.wikipedia.org/wiki/Progressive_lens

    Progressive lenses are corrective lenses used in eyeglasses to correct presbyopia and other disorders of accommodation. They are characterised by a gradient of increasing lens power, added to the wearer's correction for the other refractive errors. The gradient starts at the wearer's distance prescription at the top of the lens and reaches a ...

  3. List of virtual reality headsets - Wikipedia

    en.wikipedia.org/wiki/List_of_virtual_reality...

    Alcatel Vision 2016-09-01 1080x1020 18:17 No Google Daydream No Microsoft Hololens: 2016-10-12 Inside-out 579 g $3000 (developers) $5000 (enterprise) No AR. Gesture commands. Intel 32-bit (1 GHz) Windows MR Optional HELMET VISION 2016-11-02 Yes 8" OLED: 1920×1200 16 16:10 120° Horizontal $549 No Panoramic lens, 6DoF controller,

  4. Human eye - Wikipedia

    en.wikipedia.org/wiki/Human_eye

    The human eye is a sensory organ in the visual system that reacts to visible light allowing eyesight. Other functions include maintaining the circadian rhythm, and keeping balance . Arizona Eye Model. "A" is accommodation in diopters. The eye can be considered as a living optical device. It is approximately spherical in shape, with its outer ...

  5. Are streaming bundles really worth it? Everything to know ...

    www.aol.com/streaming-bundles-really-worth...

    The question for individual consumers is whether you get your money's worth from all the services included in the packages. Here are the prices for the major bundles: Disney+ and Hulu: $10.99 (ads ...

  6. Lump sum payout vs. annuity from a pension: How to decide - AOL

    www.aol.com/finance/lump-sum-payout-vs-annuity...

    4. Your risk tolerance. Your comfort level with investment risk is a critical factor in deciding between a lump sum and an annuity. A lump sum exposes you to a lot of risk. Invest the money too ...

  7. Fabry–Pérot interferometer - Wikipedia

    en.wikipedia.org/wiki/Fabry–Pérot_interferometer

    The heart of the Fabry–Pérot interferometer is a pair of partially reflective glass optical flats spaced micrometers to centimeters apart, with the reflective surfaces facing each other. (Alternatively, a Fabry–Pérot etalon uses a single plate with two parallel reflecting surfaces.) The flats in an interferometer are often made in a wedge ...

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