Medium Energy Ion Scattering Facility — MEIS The Medium Energy Ion Scattering is an STFC facility based at the Daresbury Laboratory in Cheshire. The ion spectrometer provides industry and research scientists with a method for analysing surfaces using a positively charged beam on ions… … Wikipedia
Energy transfer upconversion — or ETU is a physical principle (most commonly encountered in solid state laser physics) that involves the excitation of a laser active ion to a level above that which would be achieved by simple absorption of a pump photon, the required… … Wikipedia
Medium — may refer to: Contents 1 Communication 2 Natural science 3 Entertainment … Wikipedia
PHYSICS — The material presented in this entry emphasizes those contributions which were important in arriving at verified present day scientific results, rather than those that may have appeared important at the time. Unavoidably it will overlap in parts… … Encyclopedia of Judaism
Energy (esotericism) — This article is about spiritual energy. For other uses, see Energy (disambiguation). Subtle energy redirects here. For the mystical concept of psychospiritual bodies overlaying the physical body, see Subtle body. Spiritual practices and ideas… … Wikipedia
List of physics topics A-E — NOTOC A B C D E F G H I J K L M N O P Q R S T U V W X Y ZList of physics topics F L >>AAb Am* Abbe number * Abbe, Ernst * Absolute zero * Accelerating universe * Acceleration * Acoustic theory * Action (physics) * Active laser medium * Adiabatic… … Wikipedia
Low-energy ion scattering — LEIS redirects here; for the Hawaiian garland see Lei (Hawaii). Low energy ion scattering spectroscopy (LEIS), sometimes referred to simply as ion scattering spectroscopy (ISS), is a surface sensitive analytical technique used to characterize the … Wikipedia
Plasma (physics) — For other uses, see Plasma. Plasma lamp, illustrating some of the more complex phenomena of a plasma, including filamentation. The colors are a result of relaxation of electrons in excited states to lower energy states after they have recombined… … Wikipedia
Aristotelian physics — The Greek philosopher Aristotle (384 BC – 322 BC) developed many theories on the nature of physics that are completely different from what are now understood as the laws of physics. These involved what Aristotle described as the four elements, as … Wikipedia
History of Physics — History of Physics † Catholic Encyclopedia ► History of Physics The subject will be treated under the following heads: I. A Glance at Ancient Physics; II. Science and Early Christian Scholars; III. A Glance at Arabian Physics; IV.… … Catholic encyclopedia
Interstellar medium — Interstellar redirects here. For other uses, see Interstellar (disambiguation). The distribution of ionized hydrogen (known by astronomers as H II from old spectroscopic terminology) in the parts of the Galactic interstellar medium visible… … Wikipedia