File:5.25 inch MFM hard disk drive.JPG

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

5.25_inch_MFM_hard_disk_drive.JPG (640 × 512 pixels, file size: 120 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents
Description The large drive is a 5.25" full-height 111 MB MFM drive. The smaller drive is a 2.5" 6495 MB IDE drive. The coins at bottom are a US cent (left, 19 mm) and a UK penny for size comparison.
Date
Source Photo by Ian Wilson
Author User Redgrittybrick on en.wikipedia
Permission
(Reusing this file)
I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This licensing tag was added to this file as part of the GFDL licensing update.
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 2.5 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
You may select the license of your choice.
Other versions

Originally from en.wikipedia; description page is (was) here

* 17:50, 25 June 2006 [[:en:User:Redgrittybrick|Redgrittybrick]] 640×512 (123,021 bytes) <span class="comment">((Photo by Ian Wilson))</span>


This image has currency in it to indicate scale.

Using coins for scale is discouraged as it will require people unfamiliar with them to look up the dimensions or guess, both of which defeat the purpose of the object in the first place. Coins can also reinforce a geographical bias, and some coins' designs are copyrighted.

Ideally, a photograph should include a ruler with the subject (example) or an added scale marking. SI ("metric") units are the most commonly used worldwide (see meter and centimeter).

Images with coins to indicate scale

Common coin diameters for reference:

  • U.S. dollar (as of?):
    • 1¢: 19.05 mm, 0.75 in
    • 5¢: 21.21 mm, 0.84 in
    • 10¢: 17.91 mm, 0.71 in
    • 25¢: 24.26 mm, 0.94 in
    • 50¢: 30.61 mm, 1.22 in
    • $1: 26.5 mm, 1.02 in
  • Canadian dollar (as of?):
    • 1¢: 19.05 mm, 0.75 in
    • 5¢: 21.2 mm, 0.83 in
    • 10¢: 18.03 mm, 0.71 in
    • 25¢: 23.88 mm, 0.94 in
    • 50¢: 27.13 mm, 1.07 in
    • $1: 26.5 mm, 1.02 in
    • $2: 28 mm, 1.1 in
  • Pound sterling as of 2021:
    • 1p: 20.32 mm, 0.8 in
    • 2p: 25.91 mm, 1.02 in
    • 5p: 18 mm, 0.71 in
    • 10p: 24.5 mm, 0.96 in
    • 20p: 21.4 mm, 0.84 in
    • 50p: 27.3 mm, 1.07 in
    • £1: 23.03–23.43 mm, 0.91–0.92 in
    • £2: 28.4 mm, 1.12 in
  • Euro as of 2002:
    • 1c: 16.25 mm, 0.64 in
    • 2c: 18.75 mm, 0.74 in
    • 5c: 21.25 mm, 0.84 in
    • 10c: 19.75 mm, 0.78 in
    • 20c: 22.25 mm, 0.88 in
    • 50c: 24.25 mm, 0.95 in
    • €1: 23.25 mm, 0.92 in
    • €2: 25.75 mm, 1.01 in

Deutsch  English  español  français  Gaeilge  italiano  Plattdüütsch  português  sicilianu  svenska  suomi  македонски  русский  മലയാളം  한국어  日本語  中文  中文(简体)‎  עברית  +/−

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current19:41, 24 July 2006Thumbnail for version as of 19:41, 24 July 2006640 × 512 (120 KB)Liftarn (talk | contribs){{Information| |Description=The large drive is a 5.25" full-height 111 MB MFM drive. The smaller drive is a 2.5" 6495 MB IDE drive. The coins are a US cent and a UK penny for size comparison. |Source=Photo by Ian Wilson |Date= |Author=User [[:en:User:Redg

The following page uses this file:

File usage on other wikis

The following other wikis use this file:

Metadata