The radius of an electron is approximately ... is the total number of protons and neutrons in the nucleus. It is measured in the atomic mass units (amu). Structure of an atom.

For the first time, scientists have acquired direct evidence of rare, pulsing pear-shaped structures within atomic nuclei of ...

For decades, atomic clocks have been the pinnacle of precision timekeeping, enabling GPS navigation, cutting-edge physics ...

For decades, scientists believed that lead-208, a "doubly magic" and highly stable atomic nucleus, was perfectly spherical.

The method chosen depends on the type of mixture. Atomic structure - AQA Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in shells. The numbers of subatomic ...

A crucial component of this is understanding the behaviour of the electrons that surround the atomic nucleus; these dynamics dominate the way atoms and molecules interact with their environment.

Example nuclear reactions include radioactive decay, fission, the break-up of a nucleus, and fusion, the merging of nuclei. Analysis of gravitational waves from merging binary neutron stars was ...

All types of radiation become less intense as they travel further away from the radioactive material. This is because the particles or rays become more spread out. The thicker the substance, the ...

The IAEA's NUCLEUS information resource portal provides access to over 100 scientific, technical and regulatory resources, including databases, applications, publications and training material. As it ...

From the discovery of gravity to the first mission to defend Earth from an asteroid, here are the most important physics ...