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  2. Display board - Wikipedia

    en.wikipedia.org/wiki/Display_board

    A display board, also known as poster board, is a board-shaped material that is rigid and strong enough to stand on its own, and generally used paper or other materials affixed to it. Along with quad charts , display boards were an early form of fast communication developed by the National Weather Service of the United States Department of ...

  3. Science fair - Wikipedia

    en.wikipedia.org/wiki/Science_fair

    The goals of the after-school science club federation were twofold: "to aid in the development of the scientific leaders of the next generation and at the same time foster a better understanding of science among its laymen". [2] Initially, science fairs were mostly exhibits and demonstration projects or mere displays of projects.

  4. Poster - Wikipedia

    en.wikipedia.org/wiki/Poster

    Purely textual posters have a long history: they advertised the plays of Shakespeare and made citizens aware of government proclamations for centuries. The great revolution in posters, however, was the development of printing techniques that allowed for cheap mass production and printing, notably including the technique of lithography , which ...

  5. List of Indian inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Indian_inventions...

    Power series – The Kerala school of astronomy and mathematics or the Kerala school was a school of mathematics and astronomy founded by Madhava of Sangamagrama in Tirur, Malappuram, Kerala, India. Their work, completed two centuries before the invention of calculus in Europe, provided what is now considered the first example of a power series ...

  6. Timeline of scientific discoveries - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_scientific...

    1380: The Kerala school develops convergence tests for infinite series. [111] 1380: Madhava of Sangamagrama solves transcendental equations by iteration. [113] 1380: Madhava of Sangamagrama discovers the most precise estimate of π in the medieval world through his infinite series, a strict inequality with uncertainty 3e-13.

  7. Intellectual history - Wikipedia

    en.wikipedia.org/wiki/Intellectual_history

    The historian Arthur O. Lovejoy (1873–1962) coined the phrase history of ideas [8] and initiated its systematic study [9] in the early decades of the 20th century. Johns Hopkins University was a "fertile cradle" to Lovejoy's history of ideas; [10] he worked there as a professor of history, from 1910 to 1939, and for decades he presided over the regular meetings of the History of Ideas Club. [11]

  8. History of printing - Wikipedia

    en.wikipedia.org/wiki/History_of_printing

    This industry enabled the communication of ideas and the sharing of knowledge on an unprecedented scale, leading to the global spread of the printing press during the early modern period. Alongside the development of text printing, new and lower-cost methods of image reproduction were developed, including lithography , screen printing and ...

  9. History of graphic design - Wikipedia

    en.wikipedia.org/wiki/History_of_graphic_design

    Graphic design is the practice of combining text with images and concepts, most often for advertisements, publications, or websites.The history of graphic design is frequently traced from the onset of moveable-type printing in the 15th century, yet earlier developments and technologies related to writing and printing can be considered as parts of the longer history of communication.

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