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Atomism

Atomism


Atomism (from Greek átomos: indivisible) considers every substance (including living beings) to be made up of indivisible and extremely small material particles, the atoms. Every sensual quality of perceptible bodies has to be explained by the qualities, configurations, and changes of the atoms composing it, so that the (secondary) qualities of a compound are completely determined by and reducible to the (primary) qualities of its component atoms.

Historically, atomism can be traced back to antiquity, namely to the pre-Socratic philosophers of nature, Leucippus (born c. 480/470 b.c.e.) and Democritus (c. 460370 b.c.e.). Due to Aristotle's convincing arguments against atomism, and because of its materialistic and atheistic worldview, it was unimportant during the Middle Ages. It was only with the seventeenth century that atomism was transformed into a scientific theory. Pierre Gassendi (15921655) revived classical atomism and explained the physical world as being constituted by finitely many atoms, which move in a void and have been endowed by God with a conserving momentum, thus freeing atomism from the stigma of being atheistic. Gassendi already allowed atoms to form compounds, which he called moleculae or corpuscula. The eighteenth and nineteenth centuries then gave rise to chemical atomism, which distinguished element from compound. Although Isaac Newton (16421727) had already speculated in detail on the atomic nature of matter and light in his Opticks (1704), physical atomism became widely accepted only after the development of the kinetic theory of gases in the nineteenth century. Atomism strongly supported the deterministic worldview of classical mechanics.

With the discovery of the electron and of radioactive decay, atoms themselves were recognized as composites and not indivisible units. The first atomic models were constructed in analogy to a macroscopic planetary system obeying classical laws of motion (negative electrons circling around a nucleus of neutrons and positively charged protons), but these models proved to be inconsistent. Erwin Schrödinger (18871961) and others then applied quantum mechanics to the atom. They substituted the electron orbits with probability distributions (orbitals ), which indicate in which regions of space the electron is most likely to be found. The transition from one state of the atom to another also follows quantum principles, which imply fundamental uncertainties. It has also been shown that two quantum objects that interacted once stay correlated in some of their properties, even if they move away from each other (EPR effect ). Thus, modern atomism with its dynamic view of matter has overcome the mechanistic tendencies of classical atomism and presents material reality as a holistic, fluctuating, and not fully determined net of coherence, which cannot be reconstructed as a set of completely separable massive objects that follow determined trajectories. Consequently, Alfred North Whitehead (18611947) suggested that processes ("actual entities") rather than substances are "the final real things of which the world is made up" (Whitehead, p. 18 ).

Thus, contemporary atomism opens new perspectives for the dialogue between science and religion, insofar as nature can be envisioned as being open for divine and human creative action. Living beings, human values, the act of striving for meaning and fulfillment in life, religious beliefs, and science itself are not mere agglomerations and idle enterprises in a mechanical world of swirling atoms, but can be understood as emergent and meaningful phenomena in an evolving process of creation.


See also EPR Paradox; Materialism


Bibliography

gregory, joshua c. a short history of atomism: from democritus to bohr. london: a&c black, 1931.

pais, abraham. inward bound: of matter and forces in the physical world. oxford: clarendon, 1986.

whitehead, alfred north. process and reality: an essay in cosmology, (1929) corrected edition, ed. david ray griffin and donald w. sherburne. new york: free press, 1978.

dirk evers

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atomism

atomism, philosophic concept of the nature of the universe, holding that the universe is composed of invisible, indestructible material particles. The theory was first advanced in the 5th cent. BC by Leucippus and was elaborated by Democritus. Epicurus restated the doctrine, giving the atoms weight. Atomism, nearly forgotten in later antiquity and the Middle Ages, was revived in the 17th cent. by Pierre Gassendi and was given consideration by Robert Boyle, Isaac Newton, and John Locke.

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"atomism." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 27 May. 2017 <http://www.encyclopedia.com>.

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atomism

atomism A philosophical position which views the world as composed of discrete atomistic elements, and reduces knowledge to observation of the smallest indivisible elements, such as human beings—but not social structures and social institutions. In strict atomism, the basic elements do not have causal powers: the relations between them are external and contingent. However an atomistic view of society may be combined with a voluntaristic explanation of social phenomena.

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"atomism." A Dictionary of Sociology. . Encyclopedia.com. 27 May. 2017 <http://www.encyclopedia.com>.

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atomism

atomism (Gk. atmos uncuttable) Philosophical theory originated in Greece by Leucippus and elaborated by Democritus during the 5th and 4th centuries bc. It held that everything is made of immutable and indivisible particles called atoms. The theory was an attempt to reconcile the single immutable substance theory of being, espoused by Parmenides and other Eleatic philosophers, with Heraclitus' view that all things are subject to change.

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"atomism." World Encyclopedia. . Encyclopedia.com. 27 May. 2017 <http://www.encyclopedia.com>.

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"atomism." World Encyclopedia. . Retrieved May 27, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/atomism