X-rays were discovered by:

The Bohr model of the atom proposed that electrons move in:

The atomic nucleus was discovered through experiments conducted by:

Planck's constant relates the energy of a photon to its:

The electron was discovered by:

The quantum of light energy is called a:

The neutron was discovered by:

According to Einstein's mass-energy equivalence, E equals:

Quantum mechanics primarily deals with the behavior of:

Einstein's theory of relativity introduced the concept of:

The de Broglie hypothesis proposed that particles such as electrons exhibit: