File:Beryllium OreUSGOV.jpg

Beryllium_OreUSGOV.jpg(600 × 450 pixels, file size: 47 KB, MIME type: image/jpeg)

Description
Deutsch: Beryllium Erz
English: Beryllium ore.
Magyar: Berillium-érc
Date
Source http://resourcescommittee.house.gov/subcommittees/emr/usgsweb/photogallery/ ; original upload in English Wikipedia, 3 August 2004 by Chris 73
see also webarchive - resourcescommittee.house.gov, Beryllium+Ore_jpg.jpg
Author Unknown
Public domain This image is a work of the "Minerals in Your World" project, a cooperative effort between the United States Geological Survey and the Mineral Information Institute. The images were featured in the "Minerals and Materials Photo Gallery" on the website of the U.S House Subcommittee on Energy and Natural Resources. As a work of the U.S. federal government, the image is in the public domain in the United States.
USGS logo.svg


Ruler and coin.svg
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:
    • 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:
    • 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:
    • 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: 22.5 mm , 0.89 in
    • £2: 28.4 mm , 1.12 in
  • Euro:
    • 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

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File history

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Date/TimeThumbnailDimensionsUserComment
current08:09, 7 September 2005Thumbnail for version as of 08:09, 7 September 2005600 × 450 (47 KB)Saperaud~commonswikiBeryllium ore. Source: http://resourcescommittee.house.gov/subcommittees/emr/usgsweb/photogallery/ ; original upload in English Wikipedia, 3 August 2004 by Chris 73 [[en:Image:{{subst:PAGENAME}}]] {{PD-USGov-Interior-USGS-
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