In physics, horror vacui, or plenism (), commonly stated as "nature abhors a vacuum", is a postulate attributed to Aristotle, who articulated a belief, later criticized by the

atomism Atomism (from Greek , ''atomon'', i.e. "uncuttable, indivisible") is a natural philosophy proposing that the physical universe is composed of fundamental indivisible components known as atoms. References to the concept of atomism and its atoms a ...

of Epicurus and

Lucretius Titus Lucretius Carus ( , ; – ) was a Roman poet and philosopher. His only known work is the philosophical poem ''De rerum natura'', a didactic work about the tenets and philosophy of Epicureanism, and which usually is translated into E ...

, that nature contains no vacuums because the denser surrounding material continuum would immediately fill the rarity of an incipient void. He also argued against the void in a more abstract sense (as "separable"), for example, that by definition a void (equivocally?) itself, is nothing, and following Plato, nothing cannot rightly be said to exist. Furthermore, insofar as it would be featureless, it could neither be encountered by the senses, nor could its supposition lend additional explanatory power.

Hero of Alexandria Hero of Alexandria (; grc-gre, Ἥρων ὁ Ἀλεξανδρεύς, ''Heron ho Alexandreus'', also known as Heron of Alexandria ; 60 AD) was a Greek mathematician and engineer who was active in his native city of Alexandria, Roman Egypt. He ...

challenged the theory in the first century AD, but his attempts to create an artificial vacuum failed. The theory was debated in the context of 17th-century

fluid mechanics Fluid mechanics is the branch of physics concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them. It has applications in a wide range of disciplines, including mechanical, aerospace, civil, chemical and bio ...

, by

Thomas Hobbes Thomas Hobbes ( ; 5/15 April 1588 – 4/14 December 1679) was an English philosopher, considered to be one of the founders of modern political philosophy. Hobbes is best known for his 1651 book ''Leviathan'', in which he expounds an influent ...

and Robert Boyle, among others, and through the early 18th century by

Sir Isaac Newton Sir Isaac Newton (25 December 1642 – 20 March 1726/27) was an English mathematician, physicist, astronomer, alchemist, theologian, and author (described in his time as a "natural philosopher"), widely recognised as one of the gre ...

and

Gottfried Leibniz Gottfried Wilhelm (von) Leibniz . ( – 14 November 1716) was a German polymath active as a mathematician, philosopher, scientist and diplomat. He is one of the most prominent figures in both the history of philosophy and the history of mat ...

Origin

Etymology

Plenism means "fullness", from Latin plēnum, English "plenty", cognate via Proto-Indo-European to "full". In Ancient Greek, the term for the void is τὸ κενόν (''to kenón'').

History

The idea was restated as ''"Natura abhorret vacuum"'' by François Rabelais in his series of books titled

Gargantua and Pantagruel ''The Life of Gargantua and of Pantagruel'' (french: La vie de Gargantua et de Pantagruel) is a pentalogy of novels written in the 16th century by François Rabelais, telling the adventures of two giants, Gargantua ( , ) and his son Pantagruel ...

in the 1530s. The theory was supported and restated by Galileo Galilei in the early 17th century as ''"Resistenza del vacuo"''. Galileo was surprised by the fact that water could not rise above a certain level in an aspiration tube in his

suction pump A vacuum pump is a device that draws gas molecules from a sealed volume in order to leave behind a partial vacuum. The job of a vacuum pump is to generate a relative vacuum within a capacity. The first vacuum pump was invented in 1650 by Otto vo ...

, leading him to conclude that there is a limit to the phenomenon. René Descartes proposed a plenic interpretation of atomism to eliminate the void, which he considered incompatible with his concept of space. The theory was rejected by later scientists, such as Galileo's pupil Evangelista Torricelli, who repeated his experiment with mercury.

Blaise Pascal Blaise Pascal ( , , ; ; 19 June 1623 – 19 August 1662) was a French mathematician, physicist, inventor, philosopher, and Catholic writer. He was a child prodigy who was educated by his father, a tax collector in Rouen. Pascal's earliest m ...

successfully repeated Galileo's and Torricelli's experiment and foresaw no reason why a perfect vacuum could not be achieved in principle.Blaise Pascal, ''Experiences nouvelles touchant le vide.'' ew experiments with the vacuum(1647). Scottish philosopher

Thomas Carlyle Thomas Carlyle (4 December 17955 February 1881) was a Scottish essayist, historian and philosopher. A leading writer of the Victorian era, he exerted a profound influence on 19th-century art, literature and philosophy. Born in Ecclefechan, Dum ...

mentioned Pascal's experiment in the ''

Edinburgh Encyclopædia The ''Edinburgh Encyclopædia'' is an encyclopaedia in 18 volumes, printed and published by William Blackwood and edited by David Brewster between 1808 and 1830. In competition with the Edinburgh-published ''Encyclopædia Britannica'', the ''Edin ...

'' in an 1823 article titled "Pascal".

James Clerk Maxwell James Clerk Maxwell (13 June 1831 – 5 November 1879) was a Scottish mathematician and scientist responsible for the classical theory of electromagnetic radiation, which was the first theory to describe electricity, magnetism and light ...

subscribed to this philosophy when he argued forcefully for the existence of the luminiferous aether in his 1861 electromagnetic theory of light.

References

{{Aristotelianism Obsolete theories in physics Vacuum de:Horror vacui

Origin

Etymology

History

See also

References