negative refraction

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• Negative refraction — is the name for an electromagnetic phenomenon where light rays are refracted at an interface in the reverse sense to that normally expected. Such an effect can be obtained using a metamaterial which has been designed to achieve a negative value… …   Wikipedia

• Refraction negative — Réfraction négative Schéma de la réflexion transmission d une onde plane lors d un saut d indice: réfraction normale à droite, négative réfraction à gauche La réfraction négative est un phénomène de réfraction anormal en électromagnétisme, pour… …   Wikipédia en Français

• 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

• Refraction — For the property of metals, see refraction (metallurgy). For the magic effect, see David Penn (magician). For the refraction in atmosphere, see Atmospheric refraction. Light on air–plexi surface in this experiment mainly undergoes refraction… …   Wikipedia

• Refraction — Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a different… …   The Collaborative International Dictionary of English

• Refraction circle — Refraction Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a… …   The Collaborative International Dictionary of English

• Refraction of latitude — Refraction Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a… …   The Collaborative International Dictionary of English

• Negative — Neg a*tive (n[e^]g [.a]*t[i^]v), a. [F. n[ e]gatif, L. negativus, fr. negare to deny. See {Negation}.] 1. Denying; implying, containing, or asserting denial, negation or refusal; returning the answer no to an inquiry or request; refusing assent;… …   The Collaborative International Dictionary of English

• Negative crystal — Negative Neg a*tive (n[e^]g [.a]*t[i^]v), a. [F. n[ e]gatif, L. negativus, fr. negare to deny. See {Negation}.] 1. Denying; implying, containing, or asserting denial, negation or refusal; returning the answer no to an inquiry or request; refusing …   The Collaborative International Dictionary of English

• negative electricity — Negative Neg a*tive (n[e^]g [.a]*t[i^]v), a. [F. n[ e]gatif, L. negativus, fr. negare to deny. See {Negation}.] 1. Denying; implying, containing, or asserting denial, negation or refusal; returning the answer no to an inquiry or request; refusing …   The Collaborative International Dictionary of English

• Negative eyepiece — Negative Neg a*tive (n[e^]g [.a]*t[i^]v), a. [F. n[ e]gatif, L. negativus, fr. negare to deny. See {Negation}.] 1. Denying; implying, containing, or asserting denial, negation or refusal; returning the answer no to an inquiry or request; refusing …   The Collaborative International Dictionary of English