<a href="https://en.wikipedia.org/wiki/Bohr_model" class="extiw" title="w:Bohr model">Bohr model</a> of the <a href="https://en.wikipedia.org/wiki/atomic_theory" class="extiw" title="w:atomic theory">atom</a>.
<a href="//commons.wikimedia.org/wiki/User:%D0%94.%D0%98%D0%BB%D1%8C%D0%B8%D0%BD" title="User:Д.Ильин">Д.Ильин</a>: translation, optimization
<a href="//commons.wikimedia.org/wiki/File:Bohr_atom_model_English.svg" title="File:Bohr atom model English.svg">File:Bohr atom model English.svg</a> by <a href="//commons.wikimedia.org/wiki/User:Brighterorange" title="User:Brighterorange">Brighterorange</a>