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  2. Portal 2 - Wikipedia

    en.wikipedia.org/wiki/Portal_2

    Portal 2 is a 2011 puzzle-platform game developed by Valve for Windows, Mac OS X, Linux, PlayStation 3, and Xbox 360. The digital PC version is distributed online by Valve's Steam service, while all retail editions were distributed by Electronic Arts. A port for the Nintendo Switch was included as part of Portal: Companion Collection.

  3. Logarithm - Wikipedia

    en.wikipedia.org/wiki/Logarithm

    e. In mathematics, the logarithm is the inverse function to exponentiation. That means that the logarithm of a number x to the base b is the exponent to which b must be raised to produce x. For example, since 1000 = 103, the logarithm base of 1000 is 3, or log10 (1000) = 3.

  4. Music of Portal 2 - Wikipedia

    en.wikipedia.org/wiki/Music_of_Portal_2

    Music of. Portal 2. Portal 2 is a physics-based puzzle-platform game created by Valve and released on Microsoft Windows, Mac OS X, PlayStation 3, Xbox 360 and Linux in April 2011, followed by a Nintendo Switch version in June 2022. The game, set in the desolate, labyrinthine Aperture Science facility, challenges the player to navigate test ...

  5. Portal 2 'Turrets' trailer answers age-old question | Engadget

    www.engadget.com/2011-04-05-portal-2-turrets...

    Valve has released the third Portal 2 trailer featuring Aperture Science president Cave Johnson, this time featuring the company's iconic automated turret.

  6. The Magical Number Seven, Plus or Minus Two - Wikipedia

    en.wikipedia.org/wiki/The_Magical_Number_Seven...

    Later research on short-term memory and working memory revealed that memory span is not a constant even when measured in a number of chunks. The number of chunks a human can recall immediately after presentation depends on the category of chunks used (e.g., span is around seven for digits, around six for letters, and around five for words), and even on features of the chunks within a category.

  7. Hackers steal data on virtually all of AT&T’s wireless customers

    www.aol.com/finance/hackers-steal-data-virtually...

    News of the most recent hack follows a separate data breach in March, which saw the passcodes of 7.6 million customers compromised. The company forced a reset for impacted individuals at the time.

  8. List of presidents of the United States by age - Wikipedia

    en.wikipedia.org/wiki/List_of_presidents_of_the...

    [2] [3] James K. Polk had the shortest retirement of any president, dying of cholera only 103 days after leaving office, at the age of 53 (the youngest president to die of natural causes). [7] Jimmy Carter's retirement, currently 43 years, is the longest in American presidential history.

  9. Verizon faces lawsuit after record labels say it profits from ...

    www.engadget.com/verizon-faces-lawsuit-after...

    Verizon "knowingly provides its high-speed service to a massive community of online pirates," the companies said in their complaint.