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Spectral Associates was an American maker of computer games for the TRS-80 Color Computer. It was founded in 1980 and went defunct sometime in the late
Spectral_Associates
Michael (Mike) R. Hughey Spectral Associates Aldaron 1984 Jeffrey Dwight Jade Products Alpha Search 1983 Spectral Associates Androne 1983 Robert Arnstein
List of TRS-80 Color Computer games
List_of_TRS-80_Color_Computer_games
1981 video game
America and by Microdeal in the United Kingdom. It was developed by Spectral Associates founder, Thomas Rosenbaum. A Dragon 32 version was published in 1982
Madness_and_the_Minotaur
Result about when a matrix can be diagonalized
In linear algebra and functional analysis, a spectral theorem is a result about when a linear operator or matrix can be diagonalized (that is, represented
Spectral_theorem
Linear algebra aspects of graph theory
In mathematics, spectral graph theory is the study of the properties of a graph in relationship to the characteristic polynomial, eigenvalues, and eigenvectors
Spectral_graph_theory
Classification of stars based on spectral properties
stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by
Stellar_classification
Musical composition practice
Spectral music uses the acoustic properties of sound—or sound spectra—as a basis for composition. Defined in technical language, spectral music is an
Spectral_music
Relative importance of certain frequencies in a composite signal
energy is finite, one may compute the energy spectral density. More commonly used is the power spectral density (PSD, or simply power spectrum), which
Spectral_density
Computer Shack Catch 'Em 1982 Aardvark Software Cave Walker 1986 Spectral Associates Chamelion 1982 Computerware Checker King 1980 Tandy Corporation Checkers-80
List_of_TRS-80_games
mathematics, the Hodge–de Rham spectral sequence (named in honor of W. V. D. Hodge and Georges de Rham) or Frölicher spectral sequence (named after Alfred
Hodge–de Rham spectral sequence
Hodge–de_Rham_spectral_sequence
Topics referred to by the same term
Spectral decomposition is any of several things: Spectral decomposition for matrix: eigendecomposition of a matrix Spectral decomposition for linear operator:
Spectral_decomposition
Adventure 1981 On-Line Systems Madness and the Minotaur 1981 for Spectral Associates The Hobbit 1982 Philip Mitchell and Veronika Megler of Beam Software
List of text-based computer games
List_of_text-based_computer_games
Distinctive narrow spectral feature of chemical species
A spectral line is a weaker or stronger region in an otherwise uniform and continuous spectrum. It may result from emission or absorption of light in a
Spectral_line
1980 video game
Bonka J. Morrison (Micros) Ltd. Dragon 32/64, C64 1983 Color Panic Spectral Associates TRS-80 Color Computer 1983 Cuthbert Goes Digging Microdeal TRS-80
Space_Panic
Topics referred to by the same term
Look up spectral in Wiktionary, the free dictionary. Spectral is a 2016 military science fiction film. Spectral may also refer to: Spectral (Dave Rempis
Spectral_(disambiguation)
Topic in mathematics
homological algebra and number theory, the Lyndon spectral sequence or Hochschild–Serre spectral sequence is a spectral sequence relating the group cohomology of
Lyndon–Hochschild–Serre spectral sequence
Lyndon–Hochschild–Serre_spectral_sequence
Clustering methods
In multivariate statistics, spectral clustering techniques make use of the spectrum (eigenvalues) of the similarity matrix of the data to perform dimensionality
Spectral_clustering
Home computer model
Software Hungry Horace Melbourne House I Ching Virgin Ice Castles Spectral Associates If I Had A Million Phoenix Software Impossiball Pulser Software Impossiball
Dragon_32/64
Emission spectrum with Lorentzian profile
Spectral broadening refers to the widening of emitted wavelengths of radiation due to a number of different physical processes. This phenomenon is important
Spectral_broadening
Tool in homological algebra
algebraic topology, a spectral sequence is a means of computing homology groups by taking successive approximations. Spectral sequences are a generalization
Spectral_sequence
phone games SouthPeak Games Virginia, United States 1996 Two Worlds Spectral Associates Tacoma, Washington, United States 1980 various TRS-80 Color Computer
List_of_video_game_publishers
Measure in astronomy
In astronomy, the spectral index of a source is a measure of the dependence of radiative flux density (that is, radiative flux per unit of frequency) on
Spectral_index
Topics referred to by the same term
Spectral analysis or spectrum analysis is analysis in terms of a spectrum of frequencies or related quantities such as energies, eigenvalues, etc. In specific
Spectral_analysis
Species of bat
The spectral bat (Vampyrum spectrum), also called the great false vampire bat, great spectral bat, American false vampire bat or Linnaeus's false vampire
Spectral_bat
Mathematical sequence
In mathematics, the Leray spectral sequence was a pioneering example in homological algebra, introduced in 1946 by Jean Leray. It is usually seen nowadays
Leray_spectral_sequence
Topics referred to by the same term
Spectral Evidence may refer to: Spectral evidence, a form of legal evidence based upon the testimony of those who claim to have experienced visions Spectral
Spectral_Evidence
1981 video game
Power) Xonix [he] (1984, MS-DOS) Qiks (1984, Tandy Color Computer, Spectral Associates) Quix (1984, Tandy Color Computer, Tom Mix Software) Torch 2081 (1986
Qix
Class of methods used in numerical analysis and scientific computing to solve ODE/PDE
Spectral methods are a class of techniques used in applied mathematics and scientific computing to numerically solve certain differential equations. The
Spectral_method
Proven conjecture in probability theory
In probability theory, Aldous' spectral gap conjecture is the statement that two Markov chains associated to a graph, namely the random walk and the interchange
Aldous' spectral gap conjecture
Aldous'_spectral_gap_conjecture
Spectral shape analysis relies on the spectrum (eigenvalues and/or eigenfunctions) of the Laplace–Beltrami operator to compare and analyze geometric shapes
Spectral_shape_analysis
dynamical systems, a spectral submanifold (SSM) is the unique smoothest invariant manifold serving as the nonlinear extension of a spectral subspace of a linear
Spectral_submanifold
Statistical test for linear congruential generators
The spectral test is a statistical test for the quality of a class of pseudorandom number generators (PRNGs), the linear congruential generators (LCGs)
Spectral_test
Video game company
from foreign sources, such as the American Tom Mix Software and Spectral Associates, and published the works of independent programmers (notably Ken
Microdeal
geometry and related branches of mathematics and mathematical physics, a spectral triple is a set of data which encodes a geometric phenomenon in an analytic
Spectral_triple
Spectral Genomics, Inc. was a technology spin-off company from Baylor College of Medicine, selling aCGH microarrays and related software. The company was
Spectral_Genomics
Low bitrate digital audio enhancement technique
Spectral band replication (SBR) is a technology to enhance audio or speech codecs, especially at low bit rates and is based on harmonic redundancy in the
Spectral_band_replication
Signal processing technique
goal of spectral density estimation (SDE) or simply spectral estimation is to estimate the spectral density (also known as the power spectral density)
Spectral_density_estimation
nearest stars separated by spectral type. The scope of the list is still restricted to the common main sequence spectral types: M, K, G, F, A, B and
List of nearest stars by spectral type
List_of_nearest_stars_by_spectral_type
Portion of the electromagnetic spectrum that is visible to the human eye
Colors containing only one wavelength are also called pure colors or spectral colors. Visible wavelengths pass largely unattenuated through the Earth's
Visible_spectrum
Part of spectral theory
In mathematics, the spectral theory of ordinary differential equations is the part of spectral theory concerned with the determination of the spectrum
Spectral theory of ordinary differential equations
Spectral_theory_of_ordinary_differential_equations
Dreamshadows Dreamwraiths Fetch Ice Bears Bloodsea Minotaurs Shadowpeople Spectral Minions "nasties" also appearing the Advanced Dungeons & Dragons: Heroes
List of Advanced Dungeons & Dragons 1st edition monsters
List_of_Advanced_Dungeons_&_Dragons_1st_edition_monsters
Measurement of electromagnetic radiation (esp. optical radiation)
glossaries define photometry such that associated quantities are weighted by wavelength according to the spectral sensitivity of the human visual system
Radiometry
Perception caused by wavelengths of light
Animal perception of color originates from different light wavelength or spectral sensitivity in cone cell types, which is then processed by the brain. Colors
Color
In mathematics, the EHP spectral sequence is a spectral sequence used for inductively calculating the homotopy groups of spheres localized at some prime
EHP_spectral_sequence
physics, the spectral asymmetry is the asymmetry in the distribution of the spectrum of eigenvalues of an operator. In mathematics, the spectral asymmetry
Spectral_asymmetry
Spectral interferometry (SI) or frequency-domain interferometry is a linear technique used to measure optical pulses, with the condition that a reference
Spectral_interferometry
Semiconductor light source
emit light. Unlike a laser, the light emitted from an LED is neither spectrally nor spatially coherent nor even highly monochromatic. Its spectrum is
Light-emitting_diode
Feature observed in spectroscopy
Spectral line shape or spectral line profile describes the form of an electromagnetic spectrum in the vicinity of a spectral line – a region of stronger
Spectral_line_shape
Generalization of (co)homology using chain complexes
For a variety X over a field k, the second spectral sequence from above gives the Hodge–de Rham spectral sequence for algebraic de Rham cohomology: E
Hyperhomology
Spectral density of light emitted by a black body
In physics, Planck's law (also Planck radiation law) describes the spectral density of electromagnetic radiation emitted by a black body in thermal equilibrium
Planck's_law
foolishness to his brother's. The Golden Fruit soon erupts and transforms into a spectral Mai who forgives Mitsuzane for his past actions and disappears before Mitsuzane
List of Kamen Rider Gaim episodes
List_of_Kamen_Rider_Gaim_episodes
Scientific facility at Haleakala Observatory in Hawaii, US
FWHM: 0.0464 nm (H-beta spectral line, turquoise) VBI red channel (69″ field of view) 656.282 nm, FWHM: 0.049 nm (H-alpha spectral line, light-red) 668.423 nm
Daniel K. Inouye Solar Telescope
Daniel_K._Inouye_Solar_Telescope
Failure of a generative model to generate diverse samples
training dataset. Regularization methods such as gradient penalty and spectral normalization. The large language models are usually trained in two steps
Mode_collapse
Spectral sequence
In mathematics, the Adams spectral sequence is a spectral sequence introduced by J. Frank Adams (1958) which computes the stable homotopy groups of topological
Adams_spectral_sequence
In mathematics, the Atiyah–Hirzebruch spectral sequence is a spectral sequence for calculating generalized cohomology, introduced by Michael Atiyah and
Atiyah–Hirzebruch spectral sequence
Atiyah–Hirzebruch_spectral_sequence
Measure used in functional analysis
particularly in functional analysis, a projection-valued measure, or spectral measure, is a function defined on certain subsets of a fixed set and whose
Projection-valued_measure
American actor (born 1980)
the original on July 31, 2017. Retrieved July 29, 2017. "Arctic Wisdom". Spectral Productions Inc. April 21, 2005. Archived from the original on April 26
Jake_Gyllenhaal
Warm-blooded animals with wings and feathers
Hunt, D. M. (February 1998). "The molecular basis for UV vision in birds: spectral characteristics, cDNA sequence and retinal localization of the UV-sensitive
Bird
Algebraic topology
Massey (1952), is a general source of spectral sequences. It is common especially in algebraic topology; for example, Serre spectral sequence can be constructed
Exact_couple
Small domesticated carnivorous mammal
1126/science.628838. PMID 628838. Guenther, E.; Zrenner, E. (1993). "The spectral sensitivity of dark- and light-adapted cat retinal ganglion cells". Journal
Cat
Global electromagnetic resonances, generated and excited by lightning discharges
The Schumann resonances (SR) are a set of spectral peaks in the extremely low frequency portion of the Earth's electromagnetic field spectrum. They are
Schumann_resonances
Danish physicist (1885–1962)
Johann Balmer had come up with his Balmer series to describe the visible spectral lines of a hydrogen atom: 1 λ = R H ( 1 2 2 − 1 n 2 ) for n = 3 , 4
Niels_Bohr
Blue color
the color of the dye, various colors of fabric dyed with indigo dye, a spectral color, one of the seven colors of the rainbow as described by Sir Isaac
Indigo
Substellar object
can fuse lithium (7Li). Astronomers classify self-luminous objects by spectral type, a distinction intimately tied to the surface temperature -- brown
Brown_dwarf
Sequence of terms related to the first step of a spectral sequence
cohomology arises as the five-term exact sequence associated to the Lyndon–Hochschild–Serre spectral sequence H p(G/N, H q(N, A)) ⇒ H p+q(G, A) where G
Five-term_exact_sequence
Fluctuations in the energy spectrum of the microwave background
CMB spectral distortions are tiny departures of the average cosmic microwave background (CMB) frequency spectrum from the predictions given by a perfect
Cosmic microwave background spectral distortions
Cosmic_microwave_background_spectral_distortions
Topics referred to by the same term
Wiktionary, the free dictionary. Splatter may refer to: Blood splatter Spectral splatter, radio electronics and acoustics Splatter cone, a type of volcano
Splatter
Aspect of photography history
silicon's infrared response required blue filtration to match the eye's spectral response, silicon supplanted CdS by the late 1970s because of its greater
History of the single-lens reflex camera
History_of_the_single-lens_reflex_camera
Study of health and disease within a population
Publishing "Changing Concepts: Background to Epidemiology" (PDF). Duncan & Associates. Archived from the original (PDF) on 25 July 2011. Retrieved 3 February
Epidemiology
Games for the Sony PlayStation / PS1 / PSone
November 17, 2000 December 8, 2000 P Junjou de Karen Meimai Kishi-dan: Spectral Force Seishoujo Gaiden Idea Factory Idea Factory November 25, 1999 Unreleased
List of PlayStation (console) games (A–L)
List_of_PlayStation_(console)_games_(A–L)
Marvel Comics superhero
communications, mutations, transportation, holography, energy generation, and spectral analysis, among others. However, he is never afraid to admit when others
Mister_Fantastic
French mathematician
Laura Monk is a French mathematician whose research in spectral geometry, on the expansion and spectral properties of random hyperbolic surfaces, continues
Laura_Monk
English chemist and physicist (1791–1867)
of spectral lines by an applied magnetic field. The equipment available to him was, however, insufficient for a definite determination of spectral change
Michael_Faraday
In symplectic geometry, the spectral invariants are invariants defined for the group of Hamiltonian diffeomorphisms of a symplectic manifold, which is
Spectral_invariants
Mid 19th-century confraternity
thought, speech and action. It had sufficient membership to give a long spectral procession one night, the marchers draped in sheets, which nearly the whole
Sons_of_Malta
French composer (born 1947)
Tristan Murail (born 11 March 1947) is a French composer associated with the "spectral" technique of composition. Among his compositions is the large
Tristan_Murail
French composer (1946–1998)
French composer of contemporary classical music. His work is often associated with spectral music, of which he was a major pioneer. Grisey was born in Belfort
Gérard_Grisey
American engineer and TV host (1970–2020)
working as a consultant for Disney Research and a mechanical designer at Spectral Moon, he built a fully animatronic model of Baby Yoda with the intention
Grant_Imahara
German physicist (1901–1976)
led Heisenberg to use the virtual oscillator model to try to calculate spectral frequencies. The method proved too difficult to immediately apply to realistic
Werner_Heisenberg
Catalogue (1986), DA4: Duchy of Ten (1987), Creature Catalog (1993) Spectral Death Spectral Hound D&D Expert Module X5 Temple of Death (1983), D&D Companion
List of Advanced Dungeons & Dragons 2nd edition monsters
List_of_Advanced_Dungeons_&_Dragons_2nd_edition_monsters
Compact astronomical body
distant supermassive black holes can be inferred from Doppler broadening of spectral lines emitted by rapidly orbiting gas, a technique called reverberation
Black_hole
Formulation of the finite element method
solution of partial differential equations, a topic in mathematics, the spectral element method (SEM) is a formulation of the finite element method (FEM)
Spectral_element_method
Conjecture on zeros of the zeta function
system. This gives a heuristic picture of why the zeros might lie on a spectral line and why their spacings exhibit strong repulsion rather than random
Riemann_hypothesis
Norm on a vector space of matrices
vectors), the induced matrix norm is the spectral norm. The spectral norm should not be confused with the spectral radius. The two values do not coincide
Matrix_norm
obtaining an objects distance using only visual aspects Galaxy type and spectral comparison: see galaxy morphological classification Luminosity comparison:
List of common astronomy symbols
List_of_common_astronomy_symbols
Brightest star in Earth's night sky
consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, termed Sirius B. The distance
Sirius
Red supergiant star in the constellation Orion
nature of the pulsations in size, although corresponding temperature and spectral variations are not clearly seen. Variations in the diameter of Betelgeuse
Betelgeuse
Ancient Jewish biblical manuscripts
Gregory; Zuckerman, Bruce; Zuckerman, Ken; Chiu, Joseph (1995). "Multi-Spectral Digital Imaging of Dead Sea Scrolls and Other Ancient Documents" (PDF)
Dead_Sea_Scrolls
2011 film by Matthew Vaughn
undergo a four-hour make-up process, which like Mystique was designed by Spectral Motion—but did not include Azazel's tail, which was computer-generated
X-Men:_First_Class
Empirical law on the variance of species in a habitat
process they called impact inhomogeneity in which frequent events are associated with larger impacts. In appendix B of the Eisler article, however, the
Taylor's_law
Crash of rocket into the Moon
No One Saw It", The New York Times Saunokonoko, Mark (6 August 2026), "'Spectral lines' and a giant plume: what science saw when the SpaceX rocket hit the
2026_SpaceX_lunar_impact
Star at the centre of the Solar System
(PDF) on 1 November 2012. Retrieved 29 December 2012. "Reference Solar Spectral Irradiance: Air Mass 1.5". NREL. Archived from the original on 12 May 2019
Sun
of water molecules on the surface of asteroids is announced, following spectral analysis of 7 Iris and 20 Massalia, two large main-belt objects. 14 February
2024_in_science
Galaxy containing the Solar System
Spectrograph of the Very Large Telescope to measure the relative strengths of spectral lines caused by the presence of thorium and other elements created by the
Milky_Way
Colour space defined by the CIE in 1931
functions, like the spectral sensitivity curves of the LMS color space, but not restricted to non-negative sensitivities, associates physically produced
CIE_1931_color_space
American stealth multirole fighter aircraft
Additionally, Lockheed Martin is studying integrating a fiber laser that uses spectral beam combining multiple individual laser modules into a single high-power
Lockheed Martin F-35 Lightning II
Lockheed_Martin_F-35_Lightning_II
2025 (2025-11-05) 30.3 Zak and his crew investigate phantom footsteps, laughter and spectral figures at a San Diego amusement park. They discover a dark cloud hangs
List of Ghost Adventures episodes
List_of_Ghost_Adventures_episodes
2025 studio album by Ed Sheeran
and vocals but quickly floats off in a different direction, involving spectral voices and heaving sub-bass, and "Don't Look Down", which "fruitfully"
Play_(Ed_Sheeran_album)
Binary operation in graph theory
graph can be measured by its spectral gap, with an important property of the zigzag product the preservation of the spectral gap. That is, if H {\displaystyle
Zig-zag_product
Single yellow-hued star in the constellation Cetus
single star in the constellation Cetus. Its name is a Bayer designation. Spectrally, this star is similar to the Sun, although it has only about 78% of the
Tau_Ceti
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