Changes

[[File:lighterstill.jpg]][[File:Breakdown2.jpg|right|frame]]

[[File:lighterstill.jpg]][[File:Breakdown2.jpg|right|frame]]

*[http://en.wikipedia.org/wiki/19th_century 1827]

*[https://en.wikipedia.org/wiki/19th_century 1827]

==Definitions==

==Definitions==

*1: the [[action]] or result of breaking down: as a : a [[failure]] to [[function]]  

*1: the [[action]] or result of breaking down: as a : a [[failure]] to [[function]]  

==Descriptions==

==Descriptions==

*'''Chemical Decomposiiton'''

*'''Chemical Decomposiiton'''

Chemical decomposition, analysis or '''breakdown''' is the [[separation]] of a [http://en.wikipedia.org/wiki/Chemical_compound chemical compound] into [[elements]] or simpler compounds. It is sometimes defined as the exact [[opposite]] of a chemical [[synthesis]]. Chemical decomposition is often an undesired [http://en.wikipedia.org/wiki/Chemical_reaction chemical reaction]. The stability that a chemical compound ordinarily has is [[eventually]] [[limited]] when [[exposed]] to [[extreme]] environmental conditions like heat, [[radiation]], humidity or the acidity of a solvent. The details of decomposition processes are generally not well defined, as a [[molecule]] may break up into a host of smaller [[fragments]]. Chemical decomposition is exploited in several analytical [[techniques]], notably [http://en.wikipedia.org/wiki/Mass_spectrometry mass spectrometry], traditional [http://en.wikipedia.org/wiki/Gravimetric_analysis gravimetric analysis], and [http://en.wikipedia.org/wiki/Thermogravimetric_analysis thermogravimetric analysis].

Chemical decomposition, analysis or '''breakdown''' is the [[separation]] of a [https://en.wikipedia.org/wiki/Chemical_compound chemical compound] into [[elements]] or simpler compounds. It is sometimes defined as the exact [[opposite]] of a chemical [[synthesis]]. Chemical decomposition is often an undesired [https://en.wikipedia.org/wiki/Chemical_reaction chemical reaction]. The stability that a chemical compound ordinarily has is [[eventually]] [[limited]] when [[exposed]] to [[extreme]] environmental conditions like heat, [[radiation]], humidity or the acidity of a solvent. The details of decomposition processes are generally not well defined, as a [[molecule]] may break up into a host of smaller [[fragments]]. Chemical decomposition is exploited in several analytical [[techniques]], notably [https://en.wikipedia.org/wiki/Mass_spectrometry mass spectrometry], traditional [https://en.wikipedia.org/wiki/Gravimetric_analysis gravimetric analysis], and [https://en.wikipedia.org/wiki/Thermogravimetric_analysis thermogravimetric analysis].

*'''Decomposition'''

*'''Decomposition'''

Decomposition (or rotting) is the [[process]] by which organic material is broken down into simpler forms of [[matter]]. The process is [[essential]] for [[recycling]] the finite matter that occupies physical space in the [http://en.wikipedia.org/wiki/Biome biome]. Bodies of living [[organisms]] begin to decompose shortly after [[death]]. Although no two organisms decompose in the same way, they all undergo the same [[sequential]] [[stages]] of decomposition. The [[science]] which studies decomposition is generally referred to as [http://en.wikipedia.org/wiki/Taphonomy taphonomy] from the [[Greek]] word ''taphos'', meaning [[tomb]].

Decomposition (or rotting) is the [[process]] by which organic material is broken down into simpler forms of [[matter]]. The process is [[essential]] for [[recycling]] the finite matter that occupies physical space in the [https://en.wikipedia.org/wiki/Biome biome]. Bodies of living [[organisms]] begin to decompose shortly after [[death]]. Although no two organisms decompose in the same way, they all undergo the same [[sequential]] [[stages]] of decomposition. The [[science]] which studies decomposition is generally referred to as [https://en.wikipedia.org/wiki/Taphonomy taphonomy] from the [[Greek]] word ''taphos'', meaning [[tomb]].

One can differentiate abiotic from biotic decomposition ([http://en.wikipedia.org/wiki/Biodegradation biodegradation]). The former means "degradation of a substance by [[chemical]] or [[physical]] processes, eg hydrolysis). The latter one means "the metabolic breakdown of materials into simpler components by living [[organisms]]", typically by microorganisms.

One can differentiate abiotic from biotic decomposition ([https://en.wikipedia.org/wiki/Biodegradation biodegradation]). The former means "degradation of a substance by [[chemical]] or [[physical]] processes, eg hydrolysis). The latter one means "the metabolic breakdown of materials into simpler components by living [[organisms]]", typically by microorganisms.

*'''Mental'''

*'''Mental'''

Mental breakdown (also known as a nervous breakdown) is a non-medical term used to describe an acute, [[time]]-limited [[phase]] of a specific disorder that [[manifests]] primarily with features of [[depression]] or [[anxiety]].

Mental breakdown (also known as a nervous breakdown) is a non-medical term used to describe an acute, [[time]]-limited [[phase]] of a specific disorder that [[manifests]] primarily with features of [[depression]] or [[anxiety]].

The terms "nervous breakdown" and "mental breakdown" have not been [[formally]] defined through a [[diagnostic]] system such as the [http://en.wikipedia.org/wiki/DSM-IV DSM-IV] or ICD-10, and are nearly absent from current [[scientific]] literature regarding mental illness. Although "nervous breakdown" does not necessarily have a rigorous or static [[definition]], surveys of laypersons suggest that the term refers to a specific acute time-limited reactive disorder, involving [[symptoms]] such as [[anxiety]] or [[depression]], usually precipitated by external [[stress]]ors.

The terms "nervous breakdown" and "mental breakdown" have not been [[formally]] defined through a [[diagnostic]] system such as the [https://en.wikipedia.org/wiki/DSM-IV DSM-IV] or ICD-10, and are nearly absent from current [[scientific]] literature regarding mental illness. Although "nervous breakdown" does not necessarily have a rigorous or static [[definition]], surveys of laypersons suggest that the term refers to a specific acute time-limited reactive disorder, involving [[symptoms]] such as [[anxiety]] or [[depression]], usually precipitated by external [[stress]]ors.

Specific cases are sometimes [[described]] as a "breakdown" only after a person becomes unable to [[function]] in day-to-day life.

Specific cases are sometimes [[described]] as a "breakdown" only after a person becomes unable to [[function]] in day-to-day life.