Note: this is NOT an accurate simulation. This was just for fun. The TRUE stuff: Deuterium is a stable isotope of hydrogen which has quite a few uses. D2O is heavy water, two Deuterium atoms + a hydrogen atom What to do Mess around with the speed, and stare at it :) note2:the red circle is a neutron and the blue one is a proton. The yellow one is an electron. This was just a quick mini project :)