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  2. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    The Collatz conjecture is: This process will eventually reach the number 1, regardless of which positive integer is chosen initially. That is, for each , there is some with . If the conjecture is false, it can only be because there is some starting number which gives rise to a sequence that does not contain 1.

  3. Error analysis for the Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Error_analysis_for_the...

    Earth has a radius of 6,357 km (at the poles) making = 6,357,000 m and the satellites have an altitude of 20,184 km [15] making their orbit radius = 26,541,000 m. Substituting these in the above equation, with Earth mass M = 5.974 × 10 24 , G = 6.674 × 10 −11 , and c = 2.998 × 10 8 (all in SI units), gives:

  4. Google Earth - Wikipedia

    en.wikipedia.org/wiki/Google_Earth

    Google Earth is a computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering addresses and ...

  5. Crocodiles that were nearly extinct make a comeback in ... - AOL

    www.aol.com/news/crocodiles-were-nearly-extinct...

    The Siamese crocodiles successfully hatched in five different nests in the Cardamom National Park in Cambodia, according to a statement from nature conservation charity Fauna & Flora Thursday ...

  6. Terravision (computer program) - Wikipedia

    en.wikipedia.org/wiki/Terravision_(computer_program)

    Terravision (computer program) Terravision is a 3D mapping software developed in 1993 by the German company ART+COM in Berlin as a "networked virtual representation of the Earth based on satellite images, aerial shots, altitude data and architectural data". [1] Development of the project was supported by the Deutsche Post (now Deutsche Telekom ).

  7. Why You Don’t Need to Worry (Too Much) About Mercury ... - AOL

    www.aol.com/why-don-t-worry-too-144200815.html

    For most men, though, mercury consumption isn’t an issue. “Most healthy adults would need to consume a lot of higher-mercury fish over long periods of time to develop any symptoms of mercury ...

  8. The Most Important Social Security Table You'll Ever See - AOL

    www.aol.com/most-important-social-security-table...

    124%. 116%. 70. 132%. 124%. Data source: Social Security Administration. The table shows that if your full retirement age is 67 (as it is for anyone born in 1960 or later) and you collect as soon ...

  9. Type I and type II errors - Wikipedia

    en.wikipedia.org/wiki/Type_I_and_type_II_errors

    In statistical hypothesis testing, a type I error, or a false positive, is the rejection of the null hypothesis when it is actually true. For example, an innocent person may be convicted. A type II error, or a false negative, is the failure to reject a null hypothesis that is actually false. For example: a guilty person may be not convicted.