The physicist associated with the concept of wave-particle duality is Louis de Broglie. In 1924, de Broglie proposed that particles, such as electrons, exhibit wave-like properties, just as light exhibits both wave and particle characteristics. He introduced the idea that ...

The physicist who first measured the charge on an electron experimentally was Robert A. Millikan. In 1909, Millikan conducted his famous oil drop experiment, in which he observed tiny oil droplets suspended in an electric field. By balancing the gravitational ...

The physicist who first confirmed the existence of positrons experimentally was Carl Anderson in 1932. Anderson was studying cosmic rays using a cloud chamber, a device that allowed him to observe the paths of charged particles. While investigating the particles ...

The concept of the antiparticle was first proposed by the British physicist Paul Dirac in 1928. Dirac developed an equation, known as the Dirac equation, to describe the behavior of relativistic electrons. In solving this equation, he discovered that it ...

The development of quantum mechanics is attributed to several key scientists, each contributing foundational ideas that reshaped our understanding of the microscopic world. Max Planck is often regarded as the father of quantum theory. In 1900, Planck introduced the concept ...

The quantum model of the hydrogen atom was proposed by Niels Bohr in 1913. Bohr’s model was a significant advancement over previous atomic models, as it introduced the idea of quantized energy levels within an atom. Based on the work ...

The physicist who first proposed the nuclear model of the atom was Ernest Rutherford. In 1911, Rutherford conducted a series of experiments, known as the gold foil experiment, in which he directed alpha particles at a thin sheet of gold. ...

The famous scientist who discovered the law of gravitation was Sir Isaac Newton. In 1687, in his groundbreaking work Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), Newton formulated the law of universal gravitation. He proposed that every particle ...

The wave theory of light was first proposed by the Dutch scientist Christiaan Huygens in the 17th century. In 1678, Huygens suggested that light travels in the form of waves, much like ripples on the surface of water. He formulated ...

The discovery of the electron is credited to British physicist J.J. Thomson in 1897. Thomson’s groundbreaking work involved experiments with cathode rays, which are streams of charged particles. While conducting experiments in a cathode ray tube, he observed that the ...