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The atomic X-ray absorption spectrum (XAS) of a core-level in an absorbing atom is separated into states in the discrete part of the spectrum called "bounds final states" or "Rydberg states" below the ionization potential (IP) and "states in the continuum" part of the spectrum above the ionization potential due to excitations of the photoelectron in the vacuum.
A point in the spectrum of a closed linear operator: in the Banach space with domain is said to belong to discrete spectrum of if the following two conditions are satisfied: [1] λ {\displaystyle \lambda } is an isolated point in σ ( A ) {\displaystyle \sigma (A)} ;
Match Day is a football computer game, published by Ocean Software in 1984 for the ZX Spectrum. It is the first game in the Match Day series, and was the creation of programmer Jon Ritman and Chris Clarke. [1] Versions were later released for the Amstrad CPC and PCW, BBC Micro, Commodore 64 and MSX systems. [2]
Spectrum analysis, also referred to as frequency domain analysis or spectral density estimation, is the technical process of decomposing a complex signal into simpler parts. As described above, many physical processes are best described as a sum of many individual frequency components.
Discrete video arcade games are digital state machines made of discrete components. Primarily designed and manufactured from the early through mid-1970s, they are single purpose computers that do not use microprocessors or RAM.
Agent X, also known as Agent X in the Brain Drain Caper, is a computer game released in 1986 for the ZX Spectrum. The player takes control of the eponymous Agent X in a multi-load game made up of a number of sub-games. It was followed by a sequel, Agent X II: The Mad Prof's Back.
Deathchase is a 1983 vehicular combat game written for the ZX Spectrum by Mervyn Estcourt and published by Micromega in the UK. [1] In Spain it was published by Ventamatic. The "3D" designation on the box led to the game sometimes being misnamed "3D Deathchase", including in revi
He first drew attention with his games Bear Bovver and Match Day for the ZX Spectrum. In 1988, Ritman was voted Best Programmer Of The Year at the Golden Joystick Awards. [2] In 2014 Ritman appeared in the documentary feature film From Bedrooms to Billions, which tells the story of the British video game industry from 1979 to its release.