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  2. List of disk drive form factors - Wikipedia

    en.wikipedia.org/wiki/List_of_disk_drive_form...

    4 in × 1 in × 5.75 in (101.6 mm × 25.4 mm × 146 mm) = 376.77344 cm³. This smaller form factor is similar to that used in an HDD by Rodime in 1983, which was the same size as the "half height" 3½" FDD, i.e., 1.63 inches high. Today, the 1-inch high ("slimline" or "low-profile") version of this form factor is the most popular form used in ...

  3. Drive bay - Wikipedia

    en.wikipedia.org/wiki/Drive_bay

    5.25-inch drive bays are divided into two height specifications, full-height and half-height. Full-height bays were found in old PCs in the early to mid-1980s. They were 3 + 1 ⁄ 4 inches (82.6 mm) high, 5 + 3 ⁄ 4 inches (146.1 mm) wide, and up to 8 inches (203.2 mm) deep, used mainly for hard disk drives and floppy disk drives.

  4. List of radioactive nuclides by half-life - Wikipedia

    en.wikipedia.org/wiki/List_of_radioactive...

    Radioactive isotope table "lists ALL radioactive nuclei with a half-life greater than 1000 years", incorporated in the list above. The NUBASE2020 evaluation of nuclear physics properties F.G. Kondev et al. 2021 Chinese Phys. C 45 030001. The PDF of this article lists the half-lives of all known radioactives nuclides.

  5. List of professional wrestling matches rated 5 or more stars ...

    en.wikipedia.org/wiki/List_of_professional...

    5 75 51 September 22, 1995 Rey Misterio Jr. vs. Psicosis: AAA Mexico City show 5 76 52 March 9, 1996 Juventud Guerrera vs. Rey Misterio Jr. ECW: Big Ass Extreme Bash: 5 [27] 77 53 May 23, 1996 Mitsuharu Misawa and Jun Akiyama vs. The Holy Demon Army (Toshiaki Kawada and Akira Taue) AJPW Super Power Series Night 5: 5 [9] 78 54 June 7, 1996

  6. FN 5.7×28mm - Wikipedia

    en.wikipedia.org/wiki/FN_5.7×28mm

    The FN 5.7×28mm (designated as the 5.7×28 by the C.I.P. [7] and FN 5.7×28mm NATO [9]) is a small-caliber, high-velocity, smokeless-powder, rebated, non-tapered, bottleneck, centerfire cartridge designed for pistols and personal defense weapons (PDW) uses, manufactured by FN Herstal. [10]

  7. Square root of 5 - Wikipedia

    en.wikipedia.org/wiki/Square_root_of_5

    The diagonal of a half square forms the basis for the geometrical construction of a golden rectangle.. The golden ratio φ is the arithmetic mean of 1 and . [4] The algebraic relationship between , the golden ratio and the conjugate of the golden ratio (Φ = − ⁠ 1 / φ ⁠ = 1 − φ) is expressed in the following formulae:

  8. Radium - Wikipedia

    en.wikipedia.org/wiki/Radium

    Of these, 221 Ra (half-life 28 s) also occurs as a 237 Np daughter, and 220 Ra and 222 Ra would be produced by the still-unobserved double beta decay of natural radon isotopes. [13] At least 12 nuclear isomers have been reported, the most stable of which is radium-205m with a half-life between 130~230 milliseconds; this is still shorter than ...

  9. List of WLAN channels - Wikipedia

    en.wikipedia.org/wiki/List_of_WLAN_channels

    Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.