Physics

About Symmetry Principles Definition of Symmetry In physics, Symmetry the properties of particles such as atoms and molecules remain unchanged after being subjected to a…

Cosmic Microwave Background Radiation The Cosmic Microwave Background radiation, or CMB for short, is a faint glow of light that fills the universe, falling on…

About BCS-Theory BCS theory, in physics, a comprehensive theory developed in 1957 by the American physicists John Bardeen, Leon N. Cooper, and John R. Schrieffer…

QED: Quantum Electrodynamics Quantum Electrodynamics (QED) is one of the most well-tested, accurate, and successful theories in physics. Quantum Electrodynamics (QED), quantum field theory of…

Describe about Holography Holography (or Holograms) is a photographic technique that records the light scattered from an object, and then presents it in a way…

Describe about Gravitation Definition- Gravitation (or Gravity) is a natural phenomenon by which all physical bodies attract each other. Gravity is one of the four…

Superfluids and Superconductors Superfluids: Superfluidity, the frictionless flow and other exotic behaviour observed in liquid helium at temperatures near absolute zero (−273.15 °C, or −459.67…

Distant Supernovae The Hubble Space Telescope images pinpoint three distant supernovae, which exploded and died billions of years ago. Scientists are using these faraway light…

Laser Spectroscopy Laser spectroscopy has led to advances in the precision with which spectral line frequencies can be measured, and this has fundamental significance for…

Neutron Spectroscopy Neutron Spectroscopy measures the atomic and magnetic motions of atoms. Neutron scattering is a powerful tool for the investigation of microscopic properties of…

Ion Trap Technique It is now more than 20 years since the first reviews of ion traps appeared (Dehmelt 1967, 1969). Since that time, the…

The Quantum Theory of Optical Coherence In the early sixties Roy was drawn into a completely different topic. He developed the quantum theory of optical…