# Iron Sulphate Nucleation Point

- By: KarlGaff
- Date: 2022-10-31
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Iron_Sulphate_Nucleation_Point.jpg)
- Rights: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0)
- Picture: https://invisiblenetwork.ai/thumbs/commons/thumb/f/f8/Iron_Sulphate_Nucleation_Point.jpg/1920px-Iron_Sulphate_Nucleation_Point.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

A nucleation point in a thin crystalline film of an iron-based compound photographed through compensated polarisation microscopy.