The “lead” of a pencil is actually made of a substance called graphite which is made of carbon atoms. The picture shows a close-up of one carbon atom. A hydrogen atom has one proton as the nucleus and ...

whereas more neutrons reduce the repulsion between protons. A stable nucleus can be created when these effects combine. How do nuclei become more stable in nuclear reactions? Atomic decay reactions ...

“BNCT requires epithermal neutrons, and they are best obtained by irradiating a lithium target with a low energy, high current proton beam. But at that time, there was no suitable proton ...

Neutrons have no charge. Protons are positively charged ... The fast-moving neutrons carry most of the energy from the reaction with them (99%) but before the neutrons can collide with fresh ...

He called it a neutron, and imagined it as a paired proton and electron. There was no evidence for any of these ideas. Chadwick kept the problem in the back of his mind while working on other things.

Scientists are exploring the possibilities of antimatter propulsion as they try to achieve interstellar travel. While ...

Nuclear fusion refers to a process in which two light atomic nuclei combine to form a heavier nucleus, releasing a ...

Inside a neutron star, the protons and electrons combine into uncharged neutrons. This substance is called neutron matter. The search for the universe's dark matter could end tomorrow—given a ...