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What is an atomic pile?

The atomic pile is an early model of a nuclear reactor whose core consisted of layers of graphite blocks interspersed with uranium, designed to create a sustained fission reaction. The first atomic pile was created by Ernico Fermi and his colleagues at Columbia in 1942. It consisted of a stack of pure graphite bricks surrounding a neutron source. This first …

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What is an artificial coral?

Corals are porous marine animals that live at the bottom of the ocean. Coral attaches to a strong foundation and then grows to create a coral reef. Corals are naturally vibrant and colourful. An artificial coral reef is a human-made underwater structure, typically built for the purpose of promoting marine life. Artificial reefs also improve hydrodynamics and help control beach …

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What is an AMOLED display?

The term AMOLED stands for Active Matrix Organic Light Emitting Diode/ Device/ Display. An Organic Light Emitting Diode (OLED), also Light Emitting Polymer (LEP) and Organic Electro Luminescence (OEL), is any Light Emitting Diode (LED) whose emissive electroluminescent layer is composed of a film of organic compounds. The layer usually contains a polymer substance that allows suitable organic compounds to …

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What is an aMap?

An aMap (argument map) is a visual representation of the structure of an argument in informal logic. It includes the components of an argument such as a main contention, premises, co-premises, objections, rebuttals and lemmas. Argument maps are often used in the teaching of reasoning and critical thinking and can support the analysis of pros and cons when deliberating over …

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What is an alchemist?

An alchemist was an early student of the science of chemistry. According to one theory the word “alchemy” is derived from “Khem”, the ancient name for Egypt. That country was the source of a great deal of the pioneer work in the various sciences. Much of the early work of the alchemists is frowned on by today’s scientists because it …

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What is an adobe?

In Peru, where I come from, an adobe is a brick made of mud mixed with other material such as cane, straw and stone to give consistency. It is dried in the sun. The adobe provides a cool atmosphere to buildings. In Peru, many archaeological places used this material, like the Huaca del Sol, a pre-Columbian construction in Trujillo, which …

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