english: And that's because we're measuring the weight so precisely that -- carbon comes in different isotopes, so if it has an extra neutron on it, we actually measure it as a different chemical.
non_english: To se dešava zato što merimo težinu toliko precizno da - s obzriom da ugljenik ima različite izotope, ukoliko ima jedan dodatni neutron, mi u principu učitavamo to kao drugačiju supstancu.