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  2. Conservatism in the United States - Wikipedia

    en.wikipedia.org/wiki/Conservatism_in_the_United...

    Learn about the history, principles and factions of conservatism in the US, from the colonial era to the present.

  3. List of Nikon F-mount lenses with integrated autofocus motor

    en.wikipedia.org/wiki/List_of_Nikon_F-mount...

    The sequence of lens designations may differ in literature. See also full list of Nikon designations, Sigma designations, Tamron designations and Tokina designations.. Nikon AF-S/Sigma HSM/Tamron USD or PZD: The lens contains an integrated ultrasonic focus motor based on piezoelectricity, which enables quiet or low noise autofocus operation.

  4. Fungal contamination of contact lenses - Wikipedia

    en.wikipedia.org/wiki/Fungal_contamination_of...

    Factors which contribute to fungal contamination of contact lenses include, but not limited to, "hygiene negligence such as": Improper sterilization and disinfection of contact lenses; Use of contaminated lenses; Contaminated contact lens case; Contaminated contact lens solution; Wearing of "contact lenses during eye infections"

  5. Multifocal diffractive lens - Wikipedia

    en.wikipedia.org/wiki/Multifocal_diffractive_lens

    The multifocal spots location is a function of refractive focal length f Refractive and predetermined diffractive focal length f Diffractive The focal spot at the "zero" order refers to the refractive focal length of the lens being used.

  6. Countries of the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Countries_of_the_United...

    The Channel Islands and the Isle of Man are dependencies of the Crown and are not part of the UK. Similarly, the British Overseas Territories, remnants of the British Empire, are not part of the UK. From 1801, following the Acts of Union, until 1922 the whole island of Ireland was a country within the UK.

  7. List of Minolta A-mount lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_Minolta_A-mount_lenses

    While the "(D)" designation is used on the box and in the documentation, the lenses just feature a "D" instead. Requires 8 lens contacts; lenses with only 5 contacts cannot support this feature. DT "Digital Technology", lenses for cameras with APS-C (or Super-35mm) size sensors, only. DT lenses will not fully illuminate the sensor/film area of ...

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