Researchers intercalated multi-layered germanium crystals with calcium atoms between the layers.

The colour of fetid fluorite is predominantly due to the calcium atoms remaining.

But Goratschin had brought his unfathomable mental powers to bear on the automaton, causing fusion of enough calcium atoms to destroy it from within.

The calcium atom is symbolized as Ca.

A calcium atom is digested.

The moment Ivan Goratschin concentrated, calcium atoms entered the process of nuclear fission.

In the centre of their bodies the spontaneous chain reaction of the calcium atoms commenced.

The fact that magnesium atoms are smaller than the calcium atoms they replaced has let to a reduction in the volume of the rock.

Some observations show that Mercury is surrounded by a hot corona of calcium atoms with temperature between 12,000 and 20,000 K.

It has the cubic structure typical for metal hexaborides, with octahedral units of 6 boron atoms combined with calcium atoms.