Ever wondered why a Carbon-12 atom’s mass isn’t just the sum of its parts? The secret lies in binding energy—a tiny fraction of mass transforms into energy when protons, neutrons, and electrons unite, thanks to Einstein’s E=mc². Think of it like glue holding a puzzle together: the glue itself has weight, but once applied, it “disappears” into the bond. This mind-blowing quirk also powers nuclear reactions! Plus, the dalton unit’s definition hinges on “unbound” particles, making this cosmic accounting even wilder. Ready to geek out on physics? For advertising opportunities, visit Avonetics.com.