light a fire under To urge or move to action. light at the end of the tunnel The prospect of success, relief, or escape after strenuous effort. [Middle English, from Old English lēoht, līht; see leuk- in Indo-European roots.] Usage Note: Lighted and lit are equally acceptable as pas...
Examples include the Sun, a sodium arc lamp, an incandescent light bulb, and a helium–neon laser. The physical processes producing light emission appear to be distinctly different for each type of source. On a fundamental level, however, light is generated as a result of acceleration of ...
wave theory of light - (physics) the theory that light is transmitted as waves undulatory theory, wave theory scientific theory - a theory that explains scientific observations; "scientific theories must be falsifiable" natural philosophy, physics - the science of matter and energy and their interac...
Tony Skyrme2in 1961 proposed a topological model for nuclei: particle-like continuous fields in 3D space now called skyrmions. These map 3D real space to the hypersphere (i.e. the unit sphere in four dimensions, also known as the 3-sphere3...
5c), taking advantage of their capabilities such as high efficiency. New forms of light It is also highly topical to explore higher-dimensional structured light by referring models from different disciplines, e.g., topology, particle physics, and condensed matter. Here we would like to point ...
Furthermore, the detail analysis of the emission and absorption of the light wave in a system tells us that the light wave is not continuous as we believed before but discontinuous instead. Based on this result, we elucidate the origin of the particle-wave duality of the light/electromagnetic...
Vacancies greatly influence the electronic structure and light absorption of light-haversting semiconductor. In a typical case, the electronic structure of TiO2can be tuned through the introduction of oxygen vacancies[31,141,156,214,215,263,293–296]. As shown inFig. 14a, hydrogen-reduced blue ...
This term may be criticized as a new entry into an already crowded field; we choose it because it is unambiguous, not because it is satisfying. The modifier "mass" indicates that the absorption cross section is referenced or normalized to the mass of the particle. Another quantity of ...
6. Something, such as a window, that admits illumination. 7. Architecture One of two or more openings in a window divided by a mullion or mullions. 8. Something that provides information or clarification: research that produced little new light on the question. 9. a. A state of awareness...
Newton presented his speculations in Opticks in the form of a series of queries rather than as a set of postulates, possibly conveying an ambivalence regarding the ultimate nature of light. Because of his immense authority in the scientific community, there were few challenges to his particle ...