Search results
Results From The WOW.Com Content Network
Electroluminescence — The phenomenon wherein a material emits light in response to an electric current passed through it, or to a strong electric field. Electrostatic induction — Redistribution of charges in a conductor inside an external static electric field, such as when a charged object is brought close.
Light and Space art from California was shown at Germano Celant's influential exhibition of environment-based art at the 1976 Venice Biennale, "Ambiente/arte dal futurismo alla body art". [22] The movement has rarely been shown together, as Wheeler rejected to be included in major museum exhibitions, because of his doubts that the works would ...
First published by Duke professor Adrian Bejan in 1996, the constructal law is a first principle of physics that summarizes the tendency in nature to generate configurations (patterns, designs) that facilitate the free movement of the imposed currents that flow through it. The constructal law predicts that the tree-like designs described in ...
For example, a factory that is lit from a single-phase supply with basic lighting will have a flicker of 100 or 120 Hz (depending on country, 50 Hz x 2 in Europe, 60 Hz x 2 in US, double the nominal frequency), thus any machinery rotating at multiples of 50 or 60 Hz (3000–3600rpm) may appear to not be turning, increasing the risk of injury to ...
Electrical phenomena are commonplace and unusual events that can be observed which illuminate the principles of the physics of electricity and are explained by them. Electrical phenomena are a somewhat arbitrary subset of phenomena of electromagnetism in general.
For premium support please call: 800-290-4726 more ways to reach us
Kirlian photograph of two coins. Kirlian photography is a collection of photographic techniques used to capture the phenomenon of electrical coronal discharges.It is named after Soviet scientist Semyon Kirlian, who, in 1939, accidentally discovered that if an object on a photographic plate is connected to a high-voltage source, an image is produced on the photographic plate. [1]
1665 – Francesco Maria Grimaldi highlights the phenomenon of diffraction; 1673 – Ignace Pardies provides a wave explanation for refraction of light; 1675 – Robert Boyle discovers that electric attraction and repulsion can act across a vacuum and do not depend upon the air as a medium. Adds resin to the known list of "electrics".