Contact

This site is built and maintained by one person, and it's easy for small mistakes to slip through when a page combines a formula, a unit converter, and a set of worked examples. If you spot something that doesn't add up, that report is genuinely useful — please send it along. The most valuable feedback tends to fall into a few categories.

The first is a straightforward calculation or formula error. If a worked example on the Boyle's law or Van der Waals page doesn't check out when you redo the arithmetic yourself, or a unit conversion factor looks wrong, that's exactly the kind of thing worth flagging — include the page and the numbers you used, and it can be checked and fixed quickly.

The second is a missing calculator. The gas law and thermodynamic process pages here cover Boyle's, Charles', Gay-Lussac's, Avogadro's, the combined and ideal gas laws, Van der Waals, and the isobaric, isothermal, and isochoric processes — but if there's a related law or process you expected to find and didn't, that's a reasonable feature request and helps prioritize what gets built next.

The third is translation feedback. The homepage that introduces Charles' law and this calculator has been translated into Spanish, French, German, Italian, Portuguese, Russian, Japanese, Chinese, Arabic, and Hindi. Those translations were done carefully, but a native speaker is always in a better position to catch an awkward phrase, an inconsistent term, or an outright mistranslation than a non-native reviewer. If you read one of those versions and something reads strangely, that note is genuinely valued.

Finally, there's plain usability feedback: wording that's confusing, a unit that should be added to a dropdown but isn't there, a broken link, or a layout issue on a particular device or browser. None of this needs to be polished or formal — a short description of what you saw and where is enough to act on.

This is a static site with no contact form or database behind it, so the simplest and most honest way to reach out is by email. Include a link to the page you're writing about if relevant — it saves a back-and-forth.