| Yet experiments indicated that quarks within protons were only loosely bound together. |
| Our planet is incessantly bombarded with a rain of cosmic rays, charged stable particles, such as protons and electrons. |
| As the beam bit into the front of the missile launcher, the protons shed their immense kinetic energy in the form of infrared radiation. |
| Because the alpha particle with two protons and two neutrons is especially cohesive, the release of nuclear material is often in this form. |
| The protons recombine with the oxygen in the air that's also flowing through the fuel cell and is then expelled as water vapor. |
| They would like to use their carborane acids to bind protons to atoms of the inert gas xenon. |
