The principle of conservation of energy states that energy cannot be created or destroyed, only transferred or changed from one form to another. The Doppler effect explains why a siren sounds different as it approaches and then passes by. Classical physics studies the natural world and includes the studies of electricity, magnetism, light, sound, and the forces of nature. Quantum mechanics and general relativity are the two main pillars of modern physics. The Rutherford scattering experiment led to the discovery of the atomic nucleus. The laws of physics are universal and apply everywhere in the universe. Isaac Newton is another famous physicist, known for his laws of motion and universal gravitation. The Aharonov-Bohm effect shows that electromagnetic potentials, not just fields, have physical effects. The concept of "spooky action at a distance" comes from quantum entanglement. The Hall effect is the production of a voltage difference across an electrical conductor, transverse to an electric current in the conductor and a magnetic field perpendicular to the current. The speed of light in a vacuum is approximately 299,792 kilometers per second. The photoelectric effect is the emission of electrons when light shines on a material. The Planck length is the smallest measurable length in the universe. The Cherenkov effect is the emission of light by a charged particle passing through a dielectric medium at a speed greater than the phase velocity of light in that medium. The Davisson-Germer experiment confirmed the wave nature of electrons. The Sagnac effect is a phenomenon encountered in interferometry that is elicited by rotation. The Stern-Gerlach experiment demonstrated that particles have intrinsic angular momentum (spin). The Michelson-Morley experiment disproved the existence of the "aether." The Zeeman effect is the splitting of spectral lines in a magnetic field. Quantum physics studies the smallest particles and forces in the universe, including atoms and subatomic particles. The theory of relativity led to the prediction of black holes. The Faraday effect is the rotation of the plane of polarization of a beam of light by a magnetic field parallel to the beam. The Higgs boson, also known as the "God particle," was discovered in 2012 at the Large Hadron Collider. The Compton effect is the increase in wavelength (and decrease in energy) of an X-ray or gamma ray photon, when it interacts with matter. The principle of superposition states that the total wave function of a system is the sum of the wave functions of its individual particles. The speed of sound in air is approximately 343 meters per second. The concept of "wormholes" comes from general relativity. Black holes are regions of space where gravity is so strong that nothing, not even light, can escape. The Planck time is the smallest measurable unit of time. The Heisenberg uncertainty principle states that it is impossible to simultaneously measure the exact position and momentum of a particle. The Peltier effect is the presence of heating or cooling at an electrified The Stark effect is the splitting of spectral lines in an electric field. The Casimir effect is a small attractive force that acts between two close parallel uncharged conducting plates. The most fundamental forces in the universe are gravity, electromagnetism, the strong nuclear force, and the weak nuclear force. Schrödinger's cat is a thought experiment in quantum mechanics. The Big Bang theory, which describes the birth of the universe, is a fundamental concept in cosmology, a branch of physics. The Pauli exclusion principle states that no two fermions can occupy the same quantum state simultaneously. The twin paradox is a thought experiment in special relativity involving identical twins, one of whom makes a journey into space in a high-speed rocket and comes back home to find that the other twin has aged more. The double-slit experiment demonstrates the wave-particle duality of light and matter. Albert Einstein is one of the most famous physicists, known for his theory of relativity. The word "physics" comes from the Greek word "physis," which means "nature." The Pound-Rebka experiment confirmed the gravitational redshift predicted by general relativity. The Mössbauer effect is the recoil-free emission and absorption of gamma ray photons by atoms bound in a solid. Physics is the study of matter, energy, and the interaction between them. The Josephson effect is the phenomenon of supercurrent—i.e., current that flows indefinitely long without any voltage applied—across a device known as a Josephson junction.

[ Latest MAIN on 2023-09-02 09:36:24.561459 ] [ Latest DOC on 2023-08-23 18:25:18.030841 ]