[caption id="attachment_2981" align="alignnone" width="699"] Charged particles zipping through water in a nuclear reactor produce Cherenkov radiation.[/caption] Physicists predict that shooting charged particles through an electromagnetic field, it should be possible to generate light from the empty vacuum. This could provide a new way to test the fundamental theory of electricity and magnetism, the most precise theory in all of science. via Physicists predict a way to squeeze light from the vacuum of empty space | Science | AAAS.