imaginary angle of incidence

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• angle of incidence —    The angle of incidence as used here conforms to that used in optics to describe reflection and refraction of light rays. The angle is measured with respect to the normal to the surface, rather than to the surface itself. The normal is an… …   Forensic science glossary

• angle of incidence —    When light (incident light that from a source of light) strikes an object s surface it forms an angle with an imaginary line known as the normal, which is perpendicular to the surface. The angle created between the incident ray and the normal… …   Glossary of Art Terms

• incidence angle — In radar, the angle formed between an imaginary line normal to the surface and another connecting the antenna to the target …   Aviation dictionary

• Refractive index — Refraction of light at the interface between two media. In optics the refractive index or index of refraction of a substance or medium is a measure of the speed of light in that medium. It is expressed as a ratio of the speed of light in vacuum… …   Wikipedia

• Glossary of cue sports terms — The following is a glossary of traditional English language terms used in the three overarching cue sports disciplines: carom (or carambole) billiards referring to the various carom games played on a billiard table without pockets; pool (pocket… …   Wikipedia

• Snell's law — In optics and physics, Snell s law (also known as Descartes law, the Snell–Descartes law, and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other… …   Wikipedia

• Evanescent wave — Schematic representation of evanescent waves propagating along a metal dielectric interface. The charge density oscillations, when associated with electromagnetic fields, are called surface plasmon polariton waves. The exponential dependence of… …   Wikipedia

• Reflection (physics) — Reflection is the change in direction of a wave front at an between two different media so that the wave front returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves. Law of… …   Wikipedia

• Antenna (radio) — Whip antenna on car …   Wikipedia

• Polarization — ( Brit. polarisation) is a property of waves that describes the orientation of their oscillations. For transverse waves, it describes the orientation of the oscillations in the plane perpendicular to the wave s direction of travel. Longitudinal… …   Wikipedia

• Negative index metamaterials — A negative index metamaterial causes light to refract, or bend, differently than in more common positive refractive index materials. Negative index metamaterials or negative index materials (NIM) are artificial structures where the refractive… …   Wikipedia