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Hace 4 días · The neutron has a mean square radius of about 0.8 × 10 −15 m, or 0.8 fm, and it is a spin-½ fermion. The neutron has no measurable electric charge. With its positive electric charge, the proton is directly influenced by electric fields, whereas the neutron is unaffected by electric fields.
Hace 2 días · Representation theory of the Lorentz group. Hendrik Antoon Lorentz (right) after whom the Lorentz group is named and Albert Einstein whose special theory of relativity is the main source of application. Photo taken by Paul Ehrenfest 1921. The Lorentz group is a Lie group of symmetries of the spacetime of special relativity.
Hace 5 días · Roberto Firmino Barbosa de Oliveira (born 2 October 1991) is a Brazilian professional footballer who plays as a forward or attacking midfielder for Saudi Pro League club Al-Ahli, whom he captains . After starting his career with Figueirense in 2009, Firmino spent four-and-a-half seasons at TSG Hoffenheim.
Hace 2 días · A photon (from Ancient Greek φῶς, φωτός (phôs, phōtós) 'light') is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force. Photons are massless particles that always move at the speed of light when in vacuum.
Hace 17 horas · Plutonium–gallium–cobalt alloy (PuCoGa 5) is an unconventional superconductor, showing superconductivity below 18.5 K, an order of magnitude higher than the highest between heavy fermion systems, and has large critical current. Plutonium–zirconium alloy can be used as nuclear fuel.
Hace 4 días · Quantum Teleportation. Matt DeCross and Satyabrata Dash contributed. In quantum teleportation, the properties of quantum entanglement are used to send a spin state ( qubit) between observers without physically moving the involved particle. The particles themselves are not really teleported, but the state of one particle is destroyed on one side ...
Hace 4 días · It becomes different forms by speeding up or slowing down. If you slow down light, it becomes IR, then thermal radiation, and then it becomes RF. If you speed it up, it becomes Ultra Violent, then X-ray, then Gama Ray. The question of why it does something different when you're looking at it is a problem of semantics.
