ملف:Beryllium OreUSGOV.jpg

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Beryllium_OreUSGOV.jpg(600 × 450 بكسل حجم الملف: 47 كيلوبايت، نوع MIME: image/jpeg)

الوصف
Deutsch: Beryllium Erz
English: Beryllium ore.
Magyar: Berillium-érc
المصدر 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
المؤلف غير معروفUnknown author
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.


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

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حالي12:09، 7 سبتمبر 2005تصغير للنسخة بتاريخ 12:09، 7 سبتمبر 2005600 × 450 (47 كيلوبايت)commonswiki>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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