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  2. Heinlein juveniles - Wikipedia

    en.wikipedia.org/wiki/Heinlein_juveniles

    Heinlein juveniles. The Heinlein juveniles are the science-fiction novels written by Robert A. Heinlein for Scribner's young-adult line. Each features "a young male protagonist entering the adult world of conflict, decisions, and responsibilities." [ 1] Together, they tell a loosely connected story of space exploration.

  3. Time for the Stars - Wikipedia

    en.wikipedia.org/wiki/Time_for_the_Stars

    Time for the Stars is a juvenile science fiction novel by American writer Robert A. Heinlein, published by Scribner's in 1956 as one of the Heinlein juveniles.The basic plot line is derived from a 1911 thought experiment in special relativity, commonly called the twin paradox, proposed by French physicist Paul Langevin.

  4. The Tripods - Wikipedia

    en.wikipedia.org/wiki/The_Tripods

    4. The Tripods is a series of young adult science fiction novels by John Christopher. The series takes place in a post-apocalyptic world where humanity is enslaved by "Tripods" — gigantic three-legged walking machines piloted by an alien race later identified as the "Masters". The first two books were the basis of a science fiction TV series ...

  5. Northern Lights (Pullman novel) - Wikipedia

    en.wikipedia.org/wiki/Northern_Lights_(Pullman...

    Northern Lights (titled The Golden Compass in North America and some other countries) is a young-adult fantasy novel by Philip Pullman, published in 1995 by Scholastic UK.Set in a parallel universe, it follows the journey of Lyra Belacqua to the Arctic in search of her missing friend, Roger Parslow, and her imprisoned uncle, Lord Asriel, who has been conducting experiments with a mysterious ...

  6. The Black Prism - Wikipedia

    en.wikipedia.org/wiki/The_Black_Prism

    The Black Prism is a fantasy novel by American author Brent Weeks. It is the first book in the five-volume [ 1] Lightbringer Series and follows Gavin Guile, known as the 'Prism' and the most powerful person in the world, [ 2] as he combats an uprising led by a self-proclaimed king. The book is described by the author as "a story of normal ...

  7. Young adult literature - Wikipedia

    en.wikipedia.org/wiki/Young_adult_literature

    English language young adult fiction and children's literature in general have historically shown a lack of books with a main character who is a person of color, LGBT, or disabled. [112] In the UK 90% of the best-selling YA titles from 2006 to 2016 featured white, able-bodied, cis-gendered, and heterosexual main characters. [ 113 ]

  8. Prism (optics) - Wikipedia

    en.wikipedia.org/wiki/Prism_(optics)

    Prism (optics) A familiar dispersive prism. An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base ...

  9. Dispersion (optics) - Wikipedia

    en.wikipedia.org/wiki/Dispersion_(optics)

    A compact fluorescent lamp seen through an Amici prism. In optics and in wave propagation in general, dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency; [ 1] sometimes the term chromatic dispersion is used for specificity to optics in particular. A medium having this common property may be termed a ...