Classical element | Wikipedia audio article
Channel: wikipedia tts
Date: 06/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Classical_element


00:02:42 1 Ancient history
00:03:39 1.1 Cosmic elements in Babylonia
00:04:18 1.2 India
00:04:27 1.2.1 Hinduism
00:05:56 1.2.2 Buddhism
00:07:44 1.3 China
00:11:23 1.4 Greece
00:16:31 1.5 Tibet
00:19:32 2 Post-classical history
00:19:42 2.1 Alchemy
00:21:15 2.2 Islamic
00:21:38 2.3 Japan
00:22:36 3 Modern history
00:22:45 3.1 Chemical element
00:23:36 3.2 Western astrology
00:24:12 4 Criticism
00:24:45 5 See also



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SUMMARY
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Classical elements typically refer to the concepts, rejected by modern science, in ancient Greece of earth, water, air, fire, and (later) aether, which were proposed to explain the nature and complexity of all matter in terms of simpler substances. Ancient cultures in Greece, Babylonia, Japan, Tibet, and India had similar lists , sometimes referring in local languages to "air" as "wind" and the fifth element as "void".  The Chinese Wu Xing system lists Wood (木 mù), Fire (火 huǒ), Earth (土 tǔ), Metal (金 jīn), and Water (水 shuǐ), though these are described more as energies or transitions rather than as types of material.
These different cultures and even individual philosophers had widely varying explanations concerning their attributes and how they related to observable phenomena as well as cosmology.  Sometimes these theories overlapped with mythology and were personified in deities.  Some of these interpretations included atomism (the idea of very small, indivisible portions of matter) but other interpretations considered the elements to be divisible into infinitely small pieces without changing their nature.
While the classification of the material world in ancient Indian, Hellenistic Egypt, and ancient Greece into Air, Earth, Fire and Water was more philosophical, during the Islamic Golden Age medieval middle eastern scientists used practical, experimental observation to classify materials. In Europe, the Ancient Greek system of Aristotle evolved slightly into the medieval system, which for the first time in Europe became subject to experimental verification in the 1600s, during the Scientific Revolution.
Modern science does not support the classical elements as the material basis of the physical world.  Atomic theory classifies atoms into more than a hundred chemical elements such as oxygen, iron, and mercury.  These elements form chemical compounds and mixtures, and under different temperatures and pressures, these substances can adopt different states of matter.  The most commonly observed states of solid, liquid, gas, and plasma share many attributes with the classical elements of earth, water, air, and fire, respectively, but these states are due to similar behavior of different types of atoms at similar energy levels, and not due to containing a certain type of atom or a certain type of substance.