Atomic nuclei are often described as orderly systems. Certain numbers of protons or neutrons, called magic numbers, usually ...

Later work by others built on this, showing that these energy levels are a fundamental part of how the universe works at the ...

The battles were over, but the soldiers still fought. Flashbacks, nightmares, and depression plagued them. Some slurred their speech. Others couldn’t concentrate. Haunted and fearful, the soldiers ...