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  2. Euler's formula - Wikipedia

    en.wikipedia.org/wiki/Euler's_formula

    Substituting r(cos θ + i sin θ) for e ix and equating real and imaginary parts in this formula gives ⁠ dr / dx ⁠ = 0 and ⁠ dθ / dx ⁠ = 1. Thus, r is a constant, and θ is x + C for some constant C. The initial values r(0) = 1 and θ(0) = 0 come from e 0i = 1, giving r = 1 and θ = x.

  3. Metaverse - Wikipedia

    en.wikipedia.org/wiki/Metaverse

    [6] [7] In Snow Crash, the metaverse is envisioned as a version of the Internet that is a single, universal, and immersive virtual world, facilitated by the use of virtual reality (VR) and augmented reality (AR) headsets. [8] [2] The term "metaverse" is often linked to virtual reality technology, [9] [10] and beginning in the early 2020s, with ...

  4. List of YouTubers - Wikipedia

    en.wikipedia.org/wiki/List_of_YouTubers

    An Old Dominion University student who produces magic tricks and pranks on his YouTube channel "MagicOfRahat", which has over 7 million subscribers and 1 billion video views Sabine Hossenfelder: Germany Sabine Hossenfelder Sabine is a theoretical physicist, science communicator, author, musician, singer, and YouTuber: Daniel Howell: United Kingdom

  5. Complex number - Wikipedia

    en.wikipedia.org/wiki/Complex_number

    A complex number can be visually represented as a pair of numbers (a, b) forming a vector on a diagram called an Argand diagram, representing the complex plane. Re is the real axis, Im is the imaginary axis, and i is the "imaginary unit", that satisfies i 2 = −1.

  6. Wikipedia:Unusual articles/Popular culture, entertainment and ...

    en.wikipedia.org/wiki/Wikipedia:Unusual_articles/...

    An illustrated encyclopedia of an imaginary world, written in an imaginary language. Confessions of an English Opium-Eater This highly popular autobiographical account about the effects of laudanum led several English authors to opium use.

  7. Refractive index - Wikipedia

    en.wikipedia.org/wiki/Refractive_index

    In atmospheric applications, refractivity is defined as N = n – 1, often rescaled as either [60] N = 10 6 (n – 1) [61] [62] or N = 10 8 (n – 1); [63] the multiplication factors are used because the refractive index for air, n deviates from unity by at most a few parts per ten thousand.

  8. Deadly Premonition - Wikipedia

    en.wikipedia.org/wiki/Deadly_Premonition

    Deadly Premonition [a] is a 2010 open world survival horror video game developed by Access Games.Set in the fictional rural American town of Greenvale, Washington, the story follows FBI Special Agent Francis York Morgan as he investigates the murder of an eighteen-year-old woman, which bears similarities to a series of murders across the country.

  9. Augmented reality - Wikipedia

    en.wikipedia.org/wiki/Augmented_reality

    The content can span multiple sensory modalities, including visual, auditory, haptic, somatosensory and olfactory. [1] AR can be defined as a system that incorporates three basic features: a combination of real and virtual worlds, real-time interaction, and accurate 3D registration of virtual and real objects. [ 2 ]