 Oh, what was his name? Yeah, there was a comedian back in the day who did that. Shoot, it'll come to me anyway. Yeah, Italian chemist Amadeo Avogadro. That equals the volumes of gas at the same temperature and pressure contain the same number of molecules regardless of their chemical nature and physical properties. It's Avogadro's number. And I remember there's a song to it, Avogadro's number. Anyway.