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  2. Portal (series) - Wikipedia

    en.wikipedia.org/wiki/Portal_(series)

    Portal is a series of first-person puzzle-platform video games developed by Valve.Set in the Half-Life universe, the two main games in the series, Portal (2007) and Portal 2 (2011), center on a woman, Chell, forced to undergo a series of tests within the Aperture Science Enrichment Center by a malicious artificial intelligence, GLaDOS, that controls the facility.

  3. Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/Main_Page

    Community portal – The central hub for editors, with resources, links, tasks, and announcements. Village pump – Forum for discussions about Wikipedia itself, including policies and technical issues. Site news – Sources of news about Wikipedia and the broader Wikimedia movement. Teahouse – Ask basic questions about using or editing ...

  4. Portal (video game) - Wikipedia

    en.wikipedia.org/wiki/Portal_(video_game)

    Portal. (video game) Portal is a 2007 puzzle - platform game developed and published by Valve. It was released in a bundle, The Orange Box, for Windows, Xbox 360 and PlayStation 3, and has been since ported to other systems, including Mac OS X, Linux, Android (via Nvidia Shield ), and Nintendo Switch .

  5. Natural logarithm - Wikipedia

    en.wikipedia.org/wiki/Natural_logarithm

    The natural logarithm of a number is its logarithm to the base of the mathematical constant e, which is an irrational and transcendental number approximately equal to 2.718 281 828 459. [1] The natural logarithm of x is generally written as ln x, loge x, or sometimes, if the base e is implicit, simply log x.

  6. List of historically black colleges and universities - Wikipedia

    en.wikipedia.org/wiki/List_of_historically_black...

    African Americans. This list of historically black colleges and universities (HBCUs) includes institutions of higher education in the United States that were established before 1964 with the intention of primarily serving the black community. [1] [2] Alabama leads the nation with the number of HBCUs, followed by North Carolina, then Georgia.

  7. Human evolution - Wikipedia

    en.wikipedia.org/wiki/Human_evolution

    Human evolution. The hominoids are descendants of a common ancestor. Human evolution is the evolutionary process within the history of primates that led to the emergence of Homo sapiens as a distinct species of the hominid family that includes all the great apes. [1]

  8. Log-normal distribution - Wikipedia

    en.wikipedia.org/wiki/Log-normal_distribution

    Log-normal distribution. In probability theory, a log-normal (or lognormal) distribution is a continuous probability distribution of a random variable whose logarithm is normally distributed. Thus, if the random variable X is log-normally distributed, then Y = ln (X) has a normal distribution.

  9. PlayStation Portal - Wikipedia

    en.wikipedia.org/wiki/PlayStation_Portal

    The PlayStation Portal, officially the PlayStation Portal Remote Player, is a handheld gaming accessory for the PlayStation 5 developed by Sony Interactive Entertainment. It was announced on May 23, 2023, and was released on November 15, 2023.