espectro continuo

Phonetic: "/kənˈtɪn.juː.əs/"

Part Of Speech: adjective

Definition: Without stopping; without a break, cessation, or interruption

Example: a continuous current of electricity

Definition: Without intervening space; continued

Example: a continuous line of railroad

Definition: Not deviating or varying from uniformity; not interrupted; not joined or articulated.

Definition: (of a function) Such that, for every x in the domain, for each small open interval D about f(x), there's an interval containing x whose image is in D.

Definition: (more generally, of a function between two topological spaces) Such that each open set in the target space has an open preimage (in the domain space, with respect to the given function).

Example: Each continuous function from the real line to the rationals is constant, since the rationals are totally disconnected.

Definition: (grammar) Expressing an ongoing action or state.

Part Of Speech: noun

Definition: Short wavelength electromagnetic radiation usually produced by bombarding a metal target in a vacuum. Used to create images of the internal structure of objects; this is possible because X-rays pass through most objects and can expose photographic film.

Example: X-rays are light with a wavelength between 0.1 and 10 nm.

Definition: A radiograph: a photograph made with X-rays.

Example: "The doctor ordered some X-rays of my injured wrist."

Definition: An X-ray machine.

Definition: The letter X in the ICAO spelling alphabet.

Part Of Speech: verb

Definition: To take a radiograph of; to obtain an image of using X-ray radiation, especially for the purpose of medical diagnostic evaluation.

Example: Of course there was nothing wrong with my left wrist. They X-rayed the wrong arm!

Phonetic: "/ˈspektɹəm/"

Part Of Speech: noun

Definition: A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.

Definition: Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc.

Definition: The autism spectrum.

Definition: The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).

Definition: The set of eigenvalues of a matrix.

Definition: Of a bounded linear operator A, the set of scalar values λ such that the operator A—λI, where I denotes the identity operator, does not have a bounded inverse; intended as a generalisation of the linear algebra sense.

Definition: (abstract algebra) The set, denoted Spec(R), of all prime ideals of a given ring R, commonly augmented with a Zariski topology and considered as a topological space.

Definition: Specter, apparition.

Definition: The image of something seen that persists after the eyes are closed.