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RHU_parts.jpg (400 × 328 pixels, file size: 48 KB, MIME type: image/jpeg)
Summary
Licensing
Public domainPublic domainfalsefalse
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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
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- 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
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- 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
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- 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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File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment |
current | 21:34, 30 September 2013 | | 400 × 328 (48 KB) | Jaybear | Scale added on lower border; |
| 17:58, 6 June 2006 | | 400 × 294 (28 KB) | Uwe W. | The parts of Radioisotope Heater Unit (RHU) in comparsion with an US 1¢. source:http://nuclear.gov/space/rhu-fact.html ((PD-USGov-DOE)) Category:Radioisotope thermoelectric generator |
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