Why do some elements decay in minutes, while others last billions of years? Certain "magic numbers" of nuclear particles may make all the difference.

Hollow atoms are special atoms with multiple missing electrons in their inner shells, while their outer shells are still fully or partially filled with electrons. Studying the production mechanisms, ...

A translation by R.B. Lindsay and Rachel T. Lindsay of "Helge Holst og H.A. Kramers. Bohrs atomteori, almenfatteligt fremstillet." siris_sil_803522 ...