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 ## Acknowledgements
 
-Element properties in `src/lib/periodic-table-data.ts` were combined from [`Bowserinator/Periodic-Table-JSON`](https://github.com/Bowserinator/Periodic-Table-JSON/blob/master/PeriodicTableJSON.json) under Creative Commons license and [`robertwb/Periodic Table of Elements.csv`](https://gist.github.com/robertwb/22aa4dbfb6bcecd94f2176caa912b952) (unlicensed).
+1. Element properties in `src/lib/periodic-table-data.ts` were combined from [`Bowserinator/Periodic-Table-JSON`](https://github.com/Bowserinator/Periodic-Table-JSON/blob/master/PeriodicTableJSON.json) under Creative Commons license and [`robertwb/Periodic Table of Elements.csv`](https://gist.github.com/robertwb/22aa4dbfb6bcecd94f2176caa912b952) (unlicensed).
+1. Thanks to [Images of Elements](https://images-of-elements.com) for providing photos of elemental crystals and glowing excited gases.
+1. Thanks to [@kadinzhang](https://github.com/kadinzhang) and their [Periodicity project](https://ptable.netlify.app) [[code](https://github.com/kadinzhang/Periodicity)] for the idea to inset a scatter plot into the table showing heat map values.