Uraninite, Strontium 90 and curving of electrons with a magnetic field, Radium 226 and some natural radiations.


At 00:23, there is a straight proton, right after the source.

I put some random music and I have to add the copyright there :

It Came Upon a Midnight Clear de Kevin MacLeod fait l'objet d'une licence Creative Commons Attribution 4.0. https://creativecommons.org/licenses/...

Source : http://incompetech.com/music/royalty...

Artiste : http://incompetech.com/

――――

Oxygen Garden de Chris Zabriskie fait l'objet d'une licence Creative Commons Attribution 4.0. https://creativecommons.org/licenses/...

Source : http://chriszabriskie.com/divider/'>http://chriszabriskie.com/divider/

Artiste : http://chriszabriskie.com/