# Confocal measurement of 1-euro-star 3d and euro

- By: Confocal_measurement_of_1-euro-star_3d.png: Dr. Schorsch
- Date: 2010-04-04
- Classification: Photograph
- Credit line: Confocal_measurement_of_1-euro-star_3d.png EUR_1_(2007_issue).png Common side of the one euro coin, see here for reproduction rights: \[1\] (section 9) and \[2\]
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Confocal_measurement_of_1-euro-star_3d_and_euro.png)
- Rights: [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0)
- Picture: https://invisiblenetwork.ai/thumbs/commons/thumb/5/5d/Confocal_measurement_of_1-euro-star_3d_and_euro.png/1920px-Confocal_measurement_of_1-euro-star_3d_and_euro.png
- Who can see it: Kids profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

Three dimensional representation of a 1-euro coin's surface detail: One of the stars embossed on one side of the coin is shown. The 3d profile has been measured with a confocal white light microscope. The lateral range of the measurement is 800 µm by 800 µm (0.8 mm by 0.8 mm), the vertical range is approximately 60 µm (0.06 mm). The colours of the surface show the height according to the scale on the right side of the image. The graphics was created using MATLAB.