noun Download 🔗Share A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes. Examples : "The spectra of possible career paths for a young graduate are vast. " range science math physics Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc. Examples : "When sunlight passes through a prism, it separates into beautiful spectra of red, orange, yellow, green, blue, indigo, and violet. " physics astronomy energy frequency color phenomena science Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share The autism spectrum. Examples : "My brother's on the autism spectrum, and he needs extra support at school. " medicine disease mind condition human being Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.). Examples : "The scientist analyzed the spectra of different light sources to identify the elements they contained. " physics chemistry astronomy science energy phenomena substance technical Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share The set of eigenvalues of a matrix. Examples : "The physics student calculated the spectra of a matrix representing the energy levels of an electron in an atom. " math technical Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share 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. Examples : "The spectra of the teacher's grading system showed that some students struggled with a particular type of math problem. " math physics technical Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share (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. Examples : "Let's try this: "Mathematicians studying the abstract properties of rings might examine their spectra to understand their fundamental structure." " math abstract Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share Specter, apparition. Examples : "The fearsome spectra of failing grades haunted the student's thoughts all night. " supernatural mythology religion being Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share The image of something seen that persists after the eyes are closed. Examples : "After staring at the bright computer screen all day, tired spectra of code danced behind my eyelids when I closed my eyes. " mind sensation phenomena Chat with AIVocabulary GamePractice Reading