Difference between revisions of "Fire"
From Nordan Symposia
Jump to navigationJump to searchm (Text replacement - "http://nordan.daynal.org" to "https://nordan.daynal.org") |
m (Text replacement - "http://" to "https://") |
||
| Line 3: | Line 3: | ||
==Etymology== | ==Etymology== | ||
[https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Old English fȳr; akin to Old High German fiur fire, Greek pyr | [https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Old English fȳr; akin to Old High German fiur fire, Greek pyr | ||
| − | *Date: before [ | + | *Date: before [https://www.wikipedia.org/wiki/12th_Century 12th century] |
==Definitions== | ==Definitions== | ||
*1 a (1) : the [[phenomenon]] of combustion [[manifested]] in [[light]], flame, and [[heat]] (2) : one of the four elements of the alchemists | *1 a (1) : the [[phenomenon]] of combustion [[manifested]] in [[light]], flame, and [[heat]] (2) : one of the four elements of the alchemists | ||
| Line 15: | Line 15: | ||
:c : a rapidly delivered series (as of remarks) | :c : a rapidly delivered series (as of remarks) | ||
==Description== | ==Description== | ||
| − | '''Fire''' is the rapid oxidation of a [[material]] in the [[chemical]] [[process]] of [ | + | '''Fire''' is the rapid oxidation of a [[material]] in the [[chemical]] [[process]] of [https://en.wikipedia.org/wiki/Combustion combustion], releasing [[heat]], [[light]], and various [[reaction]] products. Slower oxidative [[processes]] like rusting or digestion are not included by this definition. |
| − | The [ | + | The [https://en.wikipedia.org/wiki/Flame flame] is the [[visible]] portion of the fire and consists of [[glowing]] hot [[gases]]. If hot enough, the gases may become ionized to produce [https://en.wikipedia.org/wiki/Plasma_(physics) plasma]. Depending on the substances alight, and any impurities outside, the [[color]] of the flame and the fire's [[intensity]] might vary. |
| − | Fire in its most common [[form]] can result in [ | + | Fire in its most common [[form]] can result in [https://en.wikipedia.org/wiki/Conflagration conflagration], which has the [[potential]] to [[cause]] [[physical]] damage through burning. Fire is an important [[process]] that affects [[ecological]] [[systems]] across the globe. The positive [[effects]] of fire include stimulating [[growth]] and maintaining various [[ecological]] [[systems]]. Fire has been used by [[humans]] for cooking, generating [[heat]], signaling, and propulsion purposes. The [[negative]] effects of fire include decreased [[water]] purity, increased [[soil]] erosion, an increase in [[atmospheric]] pollutants and an increased hazard to human life.[https://en.wikipedia.org/wiki/Fire] |
[[Category: Chemistry]] | [[Category: Chemistry]] | ||
Latest revision as of 00:28, 13 December 2020
Etymology
Middle English, from Old English fȳr; akin to Old High German fiur fire, Greek pyr
- Date: before 12th century
Definitions
- 1 a (1) : the phenomenon of combustion manifested in light, flame, and heat (2) : one of the four elements of the alchemists
- b (1) : burning passion : ardor (2) : liveliness of imagination : inspiration
- 2 a : fuel in a state of combustion (as on a hearth) b British : a small gas or electric space heater
- 3 a : a destructive burning (as of a building)
- 4 : brilliancy, luminosity <the fire of a gem>
- 5 a : the firing of weapons (as firearms, artillery, or missiles)
Description
Fire is the rapid oxidation of a material in the chemical process of combustion, releasing heat, light, and various reaction products. Slower oxidative processes like rusting or digestion are not included by this definition.
The flame is the visible portion of the fire and consists of glowing hot gases. If hot enough, the gases may become ionized to produce plasma. Depending on the substances alight, and any impurities outside, the color of the flame and the fire's intensity might vary.
Fire in its most common form can result in conflagration, which has the potential to cause physical damage through burning. Fire is an important process that affects ecological systems across the globe. The positive effects of fire include stimulating growth and maintaining various ecological systems. Fire has been used by humans for cooking, generating heat, signaling, and propulsion purposes. The negative effects of fire include decreased water purity, increased soil erosion, an increase in atmospheric pollutants and an increased hazard to human life.[1]
