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  2. Paper size - Wikipedia

    en.wikipedia.org/wiki/Paper_size

    British architects and industrial designers once used a size called "Antiquarian", 31 in × 53 in (787 mm × 1,346 mm), as listed above, but given in the New Metric Handbook (Tutt & Adler 1981) as 813 mm × 1,372 mm (32 in × 54 in) for board size. This is a little larger than ISO A0, 841 mm × 1189 mm.

  3. Drive bay - Wikipedia

    en.wikipedia.org/wiki/Drive_bay

    The actual dimensions of the 54 mm × 78 mm are 2.126 in wide by 0.197 or 0.315 in high and 3.091 in deep (54 mm × 5 or 8 mm × 78.5 mm). These drives have been used in small devices, including as add-ons to game systems. The dimensions of a 1.8-inch drive are specified in the SFF standard specifications SFF-8111 and SFF-8120, which were ...

  4. Floppy disk - Wikipedia

    en.wikipedia.org/wiki/Floppy_disk

    Floppy disk size is often referred to in inches, even in countries using metric and though the size is defined in metric. The ANSI specification of 3½-inch disks is entitled in part "90 mm (3.5-inch)" though 90 mm is closer to 3.54 inches. [50] Formatted capacities are generally set in terms of kilobytes and megabytes.

  5. SARS-CoV-2 - Wikipedia

    en.wikipedia.org/wiki/SARS-CoV-2

    The furin protease recognizes the canonical peptide sequence RX[R/K] R↓X where the cleavage site is indicated by a down arrow and X is any amino acid. [115] [116] In SARS-CoV-2 the recognition site is formed by the incorporated 12 codon nucleotide sequence CCT CGG CGG GCA which corresponds to the amino acid sequence P RR A. [117]

  6. Incandescent light bulb - Wikipedia

    en.wikipedia.org/wiki/Incandescent_light_bulb

    Therefore, a PAR 16 is 51 mm (2 in) in diameter, a PAR 20 is 64 mm (2.5 in) in diameter, PAR 30 is 95 mm (3.75 in) and a PAR 38 is 121 mm (4.75 in) in diameter. A package of four 60-watt light bulbs Multifaceted reflector (MR) Multifaceted reflector bulbs are usually smaller in size and run at a lower voltage, often 12 V.

  7. History of the camera - Wikipedia

    en.wikipedia.org/wiki/History_of_the_camera

    Silicon Film, a proposed digital sensor cartridge for film cameras that would allow 35 mm cameras to take digital photographs without modification was announced in late 1998. Silicon Film was to work as a roll of 35 mm film, with a 1.3 megapixel sensor behind the lens and a battery and storage unit fitting in the film holder in the camera. The ...

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