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  2. List of Unicode characters - Wikipedia

    en.wikipedia.org/wiki/List_of_Unicode_characters

    A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name. A numeric character reference uses the format &#nnnn; or &#xhhhh; where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form.

  3. List of Google Easter eggs - Wikipedia

    en.wikipedia.org/wiki/List_of_Google_Easter_eggs

    "the one ring" shows "Did you mean: my precioussss" in reference to Gollum's name for it in The Lord of the Rings. [citation needed] "tina turner" shows "Did you mean: simply the best", referencing the song The Best. [citation needed] "war in ba sing se" shows "Did you mean: there is no war in Ba Sing Se".

  4. AN/PVS-5 - Wikipedia

    en.wikipedia.org/wiki/AN/PVS-5

    The AN/PVS-5 is based on the SU-50 which was a first-generation night-vision goggle adapted by the United States Air Force in 1971. From 1972 until 1990 the AN/PVS-5 was the mainstay in US Army night vision for aviation. The AN/PVS-5C was not approved for flight because of its high-light cut off feature causing the goggle to shut off in bright ...

  5. Unfavorable Semicircle - Wikipedia

    en.wikipedia.org/wiki/Unfavorable_Semicircle

    In March 2015, a YouTube account with the title Unfavorable Semicircle was created; the channel began uploading large numbers of videos on April 5. [2] The channel continued to post large numbers of videos all titled with the Sagittarius symbol or a random six digit number, or both, but most lacking a description. The videos often display ...

  6. EN 207 - Wikipedia

    en.wikipedia.org/wiki/EN_207

    The scale numbers range from LB1 to LB10, where the number is a lower limit for the optical density, i.e. LBn means that OD > n, or <, where T is the transmittance. The minimum scale number for a given laser with a beam diameter of 1 mm depends on the working mode and the wavelength as follows (EN 207:2017):

  7. Goggles - Wikipedia

    en.wikipedia.org/wiki/Goggles

    The goggles were curved to fit the user's face and had a large groove cut in the back to allow for the nose. A long thin slit was cut through the goggles to allow in a small amount of light, diminishing subsequent ultraviolet rays. The goggles were held to the head by a cord made of caribou sinew.

  8. Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/Main_Page

    Lise Meitner (1878–1968) was an Austrian-Swedish nuclear physicist who was instrumental in the discovery of nuclear fission and protactinium.In 1905, she became the second woman from the University of Vienna to earn a doctorate in physics.

  9. English Channel - Wikipedia

    en.wikipedia.org/wiki/English_Channel

    The English Channel, [a] [1] also known as the Channel, is an arm of the Atlantic Ocean that separates Southern England from northern France. It links to the southern part of the North Sea by the Strait of Dover at its northeastern end. It is the busiest shipping area in the world. [2]