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  2. Cataracts of the Nile - Wikipedia

    en.wikipedia.org/wiki/Cataracts_of_the_Nile

    The word "cataract" comes from the Greek word καταρρέω ("to flow down"), although the original Greek term was the plural-only Κατάδουποι. However, contrary to this, none of the Nile's six primary cataracts could be accurately described as waterfalls, and given a broader definition, this is the same with many of the minor ...

  3. Waterfall - Wikipedia

    en.wikipedia.org/wiki/Waterfall

    Waterfalls are sometimes interchangeably referred to as "cascades" and "cataracts", though some sources specify a cataract as being a larger and more powerful waterfall [1] [4] [5] and a cascade as being smaller. [6] A plunge pool is a type of stream pool formed at the bottom of a waterfall. [7] A waterfall may also be referred to as a "foss ...

  4. List of waterfalls by type - Wikipedia

    en.wikipedia.org/wiki/List_of_waterfalls_by_type

    Cataract: A large, powerful waterfall. [1] Multi-step: A series of waterfalls one after another of roughly the same size each with its own sunken plunge pool. [1] Block: Water descends from a relatively wide stream or river. [1] [2] Cascade: Water descends a series of rock steps. [1] [2] Segmented: Distinctly separate flows of water form as it ...

  5. Scientists developed eye drops that help dissolve cataracts

    www.aol.com/news/2015-07-23-scientists-developed...

    Cataracts cause the lens of the eye to become cloudy over time, but if they are left untreated, they can lead to complete blindness. While cataracts are unable to spread from one eye to another ...

  6. Cataract - Wikipedia

    en.wikipedia.org/wiki/Cataract

    An immature cataract has some transparent protein, but with a mature cataract, all the lens protein is opaque. In a hypermature or Morgagnian cataract, the lens proteins have become liquid. Congenital cataract, which may be detected in adulthood, has a different classification and includes lamellar, polar, and sutural cataracts. [44] [45]

  7. Glossary of geography terms (A–M) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_geography_terms...

    This glossary of geography terms is a list of definitions of terms and concepts used in geography and related fields, including Earth science, oceanography, cartography, and human geography, as well as those describing spatial dimension, topographical features, natural resources, and the collection, analysis, and visualization of geographic ...

  8. List of citizen science projects - Wikipedia

    en.wikipedia.org/wiki/List_of_citizen_science...

    Other projects like AgeGuess [8] focus on the senior demographics and enable the elderly to upload photos of themselves so the public can guess different ages. Lists of citizen science projects may change. For example, the Old Weather project website indicates that as of January 10, 2015, 51% of the logs were completed. [9]

  9. Experiment - Wikipedia

    en.wikipedia.org/wiki/Experiment

    An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried. Experiments provide insight into cause-and-effect by demonstrating what outcome occurs when a particular factor is manipulated. Experiments vary greatly in goal and scale but always rely on ...