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  2. Paper size - Wikipedia

    en.wikipedia.org/wiki/Paper_size

    These 2-digit codes are based upon A4 = "11": The first digit is the factor the longer side (297 mm) is multiplied by and the second digit is the one for the shorter side (210 mm), so "24" is 2×297 mm × 4×210 mm = 594 mm × 840 mm.

  3. ISO 216 - Wikipedia

    en.wikipedia.org/wiki/ISO_216

    The most used of this series is the size A4, which is 210 mm × 297 mm (8.27 in × 11.7 in) and thus almost exactly 1 ⁄ 16 square metre (0.0625 m 2; 96.8752 sq in) in area. For comparison, the letter paper size commonly used in North America ( 8 + 1 ⁄ 2 in × 11 in; 216 mm × 279 mm) is about 6 mm ( 0.24 in ) wider and 18 mm ( 0.71 in ...

  4. Paper - Wikipedia

    en.wikipedia.org/wiki/Paper

    A1 is half the size of a sheet of A0 (i.e., 594 mm × 841 mm), such that two sheets of A1 placed side by side are equal to one sheet of A0. A2 is half the size of a sheet of A1, and so forth. Common sizes used in the office and the home are A4 and A3 (A3 is the size of two A4 sheets).

  5. Kraft paper - Wikipedia

    en.wikipedia.org/wiki/Kraft_paper

    The body of the cartridge is wound of a kraft paper of 80–120 g/m 2, which is further covered by an outer sheet of 60–80 g/m 2 with colour and printing. Candy wrapping paper and twisting paper are thin 30–40 g/m 2 kraft papers and are mostly flexo or offset printed. These papers require a good strength, with highly oriented fibers.

  6. Book size - Wikipedia

    en.wikipedia.org/wiki/Book_size

    [4]: 67–70, 73–75 The size and proportions of a book depend on the size of the original full sheet. If a sheet 480 by 640 mm (19 by 25 in) is used to print a quarto, the resulting untrimmed pages, will be approximately half as large in each dimension: width 240 mm ( 9 + 1 ⁄ 2 in) and height 320 mm ( 12 + 1 ⁄ 2 in).

  7. Filter paper - Wikipedia

    en.wikipedia.org/wiki/Filter_paper

    This grade of filter paper is widely used for many different fields in agricultural analysis, air pollution monitoring and other similar experiments. [6] Grade 2 qualitative filter paper has the pore size of 8 μm. This grade of filter paper requires more filtration time than Grade 1 filter paper.

  8. VHS - Wikipedia

    en.wikipedia.org/wiki/VHS

    The recording medium is a Mylar [36] magnetic tape, 12.7 mm (1 ⁄ 2 inch) wide, coated with metal oxide, and wound on two spools. The tape speed for "Standard Play" mode (see below) is 3.335 cm/s (1.313 ips) for NTSC, 2.339 cm/s (0.921 ips) for PAL—or just over 2.0 and 1.4 metres (6 ft 6.7 in and 4 ft 7.2 in) per minute respectively. The ...

  9. Herpes simplex virus - Wikipedia

    en.wikipedia.org/wiki/Herpes_simplex_virus

    [1] [2] Both HSV-1 and HSV-2 are very common and contagious. They can be spread when an infected person begins shedding the virus. As of 2016, about 67% of the world population under the age of 50 had HSV-1. [3] In the United States, about 47.8% and 11.9% are estimated to have HSV-1 and HSV-2, respectively, though actual prevalence may be much ...