Carbon DatingWe've all heard of carbon-dating; it's practically a household word these days. No, it's not when two carbon atoms start to date (although, that's super cute), but rather, the scientif...

MRIsAlthough we didn't discuss this in too much detail, nuclei also have orbital levels. Just like in atoms, photons also get ejected from an excited nucleus, based on the difference of energies be...

The Expansion of the UniverseRemember absorption spectra? We said we could use it identify what a star was made out of, or even a planet's atmosphere. We weren't lying, but that's only the beginnin...