Sentences with phrase «ordinary hydrogen atoms»
Heavy water: Water containing a significantly greater proportion of heavy hydrogen (deuterium) atoms to ordinary hydrogen atoms than is found in ordinary (light) water.
https://www.eia.gov/ Not exact matches
To understand the approach they're taking, let's revisit the fiery aftermath of the Big Bang, when most ordinary matter consisted of hydrogen atoms.
At present, the density of ordinary baryons and radiation in the universe is estimated to be equivalent to about one hydrogen atom per cubic metre of space.
The Big Bang theory makes detailed predictions about the total number of ordinary atoms and about the relative abundance of deuterium (heavy hydrogen) and helium in the universe.