laser radiation wavelength
61Antimatter — For other uses, see Antimatter (disambiguation). Antimatter …
62Coherent state — In quantum mechanics a coherent state is a specific kind of quantum state of the quantum harmonic oscillator whose dynamics most closely resemble the oscillating behaviour of a classical harmonic oscillator system. It was the first example of… …
63Thermal blooming — is an atmospheric effect, seen in high energy laser beams. It is the result of the nonlinear interaction of laser radiation with the propagation medium, usually air, which is heated by the absorption of a fraction of the radiation. The amount of… …
64Optical levitation — A force diagram showing how vertical and lateral stabilization occurs in a vertically oriented optical trap. Optical levitation is a method developed by Arthur Ashkin whereby a material is levitated against the downward force of gravity by an… …
65Photodynamic therapy — Treatment that destroys cancer cells with lasers and drugs that become active when exposed to light. * * * (PDT, photoradiation therapy, phototherapy, photochemotherapy) a treatment for some types of superficial cancers. A photosensitizing agent… …
66Electro-gyration — The electrogyration effect is the spatial dispersion phenomenon, that consists in the change of optical activity (gyration) of crystals by a constant or time varying electric field. Being a spatial dispersion effect, the induced optical activity… …
67spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …
68light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics …
69Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
70Optics — For the book by Sir Isaac Newton, see Opticks. Optical redirects here. For the musical artist, see Optical (artist). Optics includes study of dispersion of light. Optics is the branch of …
