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  2. Keratoconus - Wikipedia

    en.wikipedia.org/wiki/Keratoconus

    A long-term study found a mean incidence rate of 2.0 new cases per 100,000 population per year. [78] Some studies have suggested a higher prevalence amongst females, [ 81 ] or that people of South Asian ethnicity are 4.4 times as likely to develop keratoconus as Caucasians, and are also more likely to be affected with the condition earlier.

  3. Amazon Echo - Wikipedia

    en.wikipedia.org/wiki/Amazon_Echo

    Amazon Echo, often shortened to Echo, is a brand of smart speakers developed by Amazon.Echo devices connect to the voice-controlled intelligent personal assistant service Alexa, which will respond when a user says "Alexa".

  4. Orders of magnitude (temperature) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude...

    2.5 mK, Fermi melting point of helium-3; 60 mK adiabatic demagnetization of paramagnetic molecules; 300 mK in evaporative cooling of helium-3; 700 mK, helium-3/helium-4 mixtures begin phase separation; 950 mK, melting point of helium at 2.5 megapascals of pressure. All 118 elements are solid at or below this temperature.

  5. Nintendo Entertainment System - Wikipedia

    en.wikipedia.org/wiki/Nintendo_Entertainment_System

    During the FTC probe, Nintendo changed the terms of its publisher licensing agreements to eliminate the two-year rule and other restrictive terms. Nintendo and the FTC settled the case in April 1991, with Nintendo required to send vouchers giving a $5 discount off to a new game, to every person that had purchased an NES game between June 1988 ...

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