They thought that matter was divisible into air, fire, earth and water. I mean, that whole difference, by the way, between Democritus and then Thomas Norton is a couple of thousand years is because the great experts of the day, the original groves of academe, were Plato and Aristotle, and they had a different theory. And so as he explained, all matter was eventually reducible to discrete, small particles or atomos.įLATOW: And Thomas Norton, he wrote a book called "Ordinal of Alchemy" in 1477. And there was a brilliant philosopher named Democritus, and he proposed the Greek word atomos, which means uncuttable. And you know, Sir Isaac Newton thought it was a Phoenician named Moses the Phoenician from the 13th century B.C., who we(ph) also link to the real Moses or the Moses of Charlton Heston fame.īut when it comes to the word atom, we have to go to ancient Greece of 400 B.C. Now, there are some people who think that Indian Jainism clerics may have come up with the idea of indivisible units comprising matter. MARKEL: Well, in the English - before the English language, it's actually a Greek term. Not the guy Adam, but the concept, atom.įLATOW: Or in New York we'd spell it A-D-E-M here.įLATOW: Who first coined the word atom in the English language? Markel is professor of the history of medicine at the University of Michigan in Ann Arbor and director of the Center for the History of Medicine there. With these 26 magic symbols, however, millions of words are written every day.Īnd that can only mean it's time for this month's episode of Science Diction, where we talk about the history of scientific words with my guest, Howard Markel. Atom models are associated with features (like state notification, abstract states and state predicates) and are integrated with message passing and thread scheduling.Unidentified Man: The alphabet has only 26 letters. Threads relate to activation conditions that determine object states compatible with execution. Thread execution is not preemptive, and only one thread is active in an object at a time. Threads are sometimes created simultaneously during the creation of an object to execute internal activities. All processed messages create new threads within objects. Because rule pairs are mutually exclusive, edges are not critical for a rule data dependency graph.Ītom objects (also known as active objects) are active entities similar to multithreaded servers. Compilers order rules to minimize edges that feed back from low to high priority rules. Cyclic graphs are preferred as rules and may be sequentially composed. Data dependencies between rules form a graph. Rules are assigned linear and global priority, and multiple rules may be written to the same state element. When rules are enabled, actions are selected to execute atomically. Every rule is made up of two components: state updates and enabling conditions. However, Atom also balances processing loads and minimizes timing latencies.Ītom's circuit description is comprised of a set of state elements and rules. It was designed to maximize operations executed in a given clock cycle without violating atomic operation semantics. Developed in 2007, Atom was released as open source in April of that year.
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