Trichome

Original file(3,072 × 2,304 pixels, file size: 2.96 MB, MIME type: image/jpeg)

Summary

Description Carcharodontosaurus tooth, which was found in Sahara Desert and Megalodon tooth
Date
Source Own work
Author Brocken Inaglory
Other versions Derivative works of this file:  Carcharodontosaurus and Megalodon teeth new.jpg
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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The pictured coin is a US quarter, 25¢: 24 mm, 0.95 in.gaygaygay

Licensing

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.
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attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic and 1.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
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Creative Commons Attribution-ShareAlike 2.0 Generic

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source of file

original creation by uploader

inception

2007

exposure time

0.008 second

f-number

6.3

focal length

6.7 millimetre

ISO speed

64

MIME type

image/jpeg

instance of

photograph

checksum

d1347514db4db2d725058b977d23c705a0e01b10

determination method: SHA-1

data size

3,108,121 byte

height

2,304 pixel

width

3,072 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current23:52, 11 August 2007Thumbnail for version as of 23:52, 11 August 20073,072 × 2,304 (2.96 MB)Mbz1{{Information |Description=[http://en.wikipedia.org/wiki/Carcharodontosaurus Carcharodontosaurus] tooth, which was found in Sahara Desert and [http://en.wikipedia.org/wiki/Megalodon Megalodon tooth] |Source=self-made |Date=2007 |Author= [http://home.comca
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