The inherent contradiction in the way energy behaves. At the turn of the 20th century, it was believed that light was electromagnetic waves and electrons were particles. By the 1930s, it was ...

Photoemission is a process during which electrons are ejected from a metal surface when exposed to electromagnetic radiation, (eg ultraviolet). If a clean, positively charged zinc plate is exposed ...

An intriguing consequence of this is are 'singular' features of waves, such as optical vortices (wave dislocations), which are lines in three dimensions around ... Aharonov-Bohm effect discovered in ...

Quantum superposition is a phenomenon in which a tiny particle can be in two states at the same time — but only if it is not ...

is a phenomenon known as wave-particle duality and remains one of the most perplexing mysteries in quantum mechanics. This concept lies at the heart of quantum theory, with Nobel laureate Richard ...

elementary quantum mechanical ideas wave particle duality wave function schrodinger ... barrier tunnelling phenomenon free electron theory of metals electron in a linear solid fermi energy ...