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File:TaconitePellet.JPG
Size of this preview: 742 × 600 pixels. Other resolutions: 297 × 240 pixels | 594 × 480 pixels | 950 × 768 pixels | 1,267 × 1,024 pixels | 2,464 × 1,992 pixels.

Original file ‎(2,464 × 1,992 pixels, file size: 3.9 MB, MIME type: image/jpeg)

Summary

DescriptionTaconitePellet.JPG Processed Taconite pellets as used in the——steelmaking industry, with a US Quarter shown——to scale.
Date 11/29/08
Source Own work
Author Harvey Henkelmann
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)/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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Licensing

I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 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.
https://creativecommons.org/licenses/by/3.0CC BY 3.0 Creative Commons Attribution 3.0 truetrue

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author name string: Harvey Henkelmann
URL: https://commons.wikimedia.org/user:HarveyHenkelmann
Wikimedia username: HarveyHenkelmann

copyright status

copyrighted

copyright license

Creative Commons Attribution 3.0 Unported

source of file

original creation by, uploader

captured with

Nikon Coolpix L12

File history

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Date/TimeThumbnailDimensionsUserComment
current17:34, 5 February 2012Thumbnail for version as of 17:34, 5 February 20122,464 × 1,992 (3.9 MB)SoerfmBrightness, crop
20:59, 22 January 2011Thumbnail for version as of 20:59, 22 January 20112,568 × 2,028 (2.62 MB)HarveyHenkelmannCropped and enhanced image
06:31, 29 November 2008Thumbnail for version as of 06:31, 29 November 20083,072 × 2,304 (1.43 MB)HarveyHenkelmann{{Information |Description=Processed Taconite pellets as used in the steelmaking industry, with a US quarter shown to scale. |Source=self-made |Date=11/30/08 |Author= HarveyHenkelmann |Permission= |other_versions= }} [[Category:

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Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

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Camera manufacturerNIKON
Camera modelCOOLPIX L12
Exposure time1/60 sec (0.016666666666667)
F-numberf/7.8
ISO speed rating50
Date and time of data generation01:21, 29 November 2008
Lens focal length12.3 mm
OrientationNormal
Horizontal resolution300 dpi
Vertical resolution300 dpi
Software usedAdobe Photoshop CS2 Windows
File change date. And time18:31, 5 February 2012
Y and C positioningCo-sited
Exposure ProgramNormal program
Exif version2.2
Date and time of digitizing01:21, 29 November 2008
Meaning of each component
  1. Y
  2. Cb
  3. Cr
  4. does not exist
Image compression mode4
Exposure bias0.3
Maximum land aperture4.6 APEX (f/4.92)
Metering modePattern
Light sourceUnknown
FlashFlash fired, auto mode
Supported Flashpix version1
Color spacesRGB
File sourceDigital still camera
Scene typeA directly photographed image
Custom image processingNormal process
Exposure modeAuto exposure
White balanceAuto white balance
Digital zoom ratio0
Focal length in 35 mm film76 mm
Scene capture typeStandard
Scene controlNone
ContrastNormal
SaturationNormal
SharpnessNormal
Subject distance rangeUnknown
Supported Flashpix version1
Image width2,464 px
Image height1,992 px
Date metadata was last modified19:31, 5 February 2012
Unique ID of original documentxmp.did:B2441C546A26E01185AFBAAF3AD5462C
IIM version2

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