Phase diagram of CO<sub>2</sub> (<a href="https://en.wikipedia.org/wiki/carbon_dioxide" class="extiw" title="w:carbon dioxide">carbon dioxide</a>).
X axis is temperature in <a href="https://en.wikipedia.org/wiki/kelvin" class="extiw" title="w:kelvin">kelvin</a>; Y axis is pressure in <a href="https://en.wikipedia.org/wiki/bar_(unit)" class="extiw" title="w:bar (unit)">bar</a>.
<ul><li>Ben Finney</li>
<li>Mark Jacobs</li></ul>
Commons, <a href="//commons.wikimedia.org/wiki/File:Carbon_dioxide_pressure-temperature_phase_diagram.jpg" title="File:Carbon dioxide pressure-temperature phase diagram.jpg">Image:Carbon dioxide pressure-temperature phase diagram.jpg</a>