IdeaWazaWiki - User contributions [en]

Hypercane

2007-04-15T15:29:10Z

68.237.204.37:

A '''hypercane''' is a theoretical class of [[tropical cyclone]] that could form if ocean temperatures reached around 50° [[Celsius]] (122° [[Fahrenheit]])—15° higher than the warmest ocean temperature ever recorded.<ref>[http://www.windows.ucar.edu/tour/link=/earth/Water/temp.html&edu=high Temperature of Ocean Water, Windows to the Universe]</ref>—which could in turn be caused by a large [[asteroid]] or [[comet]] impact, a large [[volcano|volcanic]] or [[supervolcano|supervolcanic]] eruption, or very extensive [[global warming]].<ref>[http://ipsnews.net/news.asp?idnews=30308 The Dawn of the Hypercane?]</ref> There is some speculation that some [[dinosaur]]s might have been killed off by a series of hypercanes, resulting from an asteroid or comet crashing into [[Earth]].<ref>[http://www.newscientist.com/article/mg14519632.600-did-storms-land-the-dinosaurs-in-hot-water.html Did storms land the dinosaurs in hot water?]</ref> The term was originally coined by atmospheric scientist [[Kerry Emanuel]] in [[1996]], at [[MIT]].<ref name="MIT">[http://wind.mit.edu/~emanuel/holem/holem.html Limits on Hurricane Intensity]</ref>

===Physical description===
Hypercanes would have wind speeds of over 130 [[m/s]], but would also have a central pressure of less than 700 [[hectopascal]]s, giving them an enormous lifespan.<ref name="MIT">[http://wind.mit.edu/~emanuel/holem/holem.html Limits on Hurricane Intensity]</ref>

===Hypercanes in fiction===
The [[anime]] ''[[Tactical Roar]]'' uses a fictional hypercane in the [[Pacific Ocean]] as a pretext to showcase naval battles, which are the series' focus. Through not mentioned as a hypercane in the movie [[The Day After Tomorrow]], three giant storms ravaged the [[northern hemisphere]] causing a big freeze.

==References==
<div class="references-small"><references/></div>

==See also==
{{tcportal}}
* [[Tropical cyclone]]
* [[Global warming]]

[[Category:Tropical cyclone meteorology]]

Archive:Aquamarine

2006-05-23T19:54:08Z

68.237.190.215: /* References */

{{otheruses1|the mineral}}

[[Image:Aquamarin cut.jpg|Aquamarine|thumb|250px]]
'''Aquamarine''' (Lat. ''aqua marina'', "water of the sea") is a [[gemstone]]-quality transparent variety of [[beryl]], having a delicate blue or blue-green color, suggestive of the tint of sea-water. It's closely related to the gem [[emerald]]. Colors vary and yellow beryl, called ''heliodor''; rose pink beryl, ''morganite''; and white beryl, ''goshenite'' are known.

Aquamarine is a beryl with a [[Hexagonal (crystal system)|hexagonal]] crystal structure and a chemical formula of Be3Al2Si6O18, a [[beryllium]] [[aluminium]] [[Silicate minerals|silicate mineral]]. It has a [[specific gravity]] of 2.68 to 2.74 and a [[Mohs hardness]] of from 7.5 to 8. Aquamarine typically is on the low end of the specific gravity range, normally at less than 2.7. The pink variety exhibits a high specific gravity of around 2.8. [[Refractive index|Refractive indices]] range around 1.57 to 1.58.

It occurs at most localities which yield ordinary beryl, some of the finest coming from [[Russia]]. The gem-gravel [[Placer mining|placer]] deposits of [[Sri Lanka]] contain aquamarine. Clear yellow beryl, such as occurs in [[Brazil]], is sometimes called aquamarine chrysolite. When [[corundum]] presents the bluish tint of typical aquamarine, it is often termed Oriental aquamarine.

In the [[United States]], aquamarines can be found at the summit of [[Mount Antero|Mt. Antero]] in the [[Sawatch Range]] in central [[Colorado]]. In [[Brazil]], there are mines in the states of [[Minas Gerais]], [[Espírito Santo]] and [[Bahia]]. Zambia also produces nice aquamarine as well as Madagascar, Malawi,Tanzania and Kenya. Much of today's aquamarine is heated to give it a better color blue.

The biggest aquamarine ever mined was found at the city of Marambaia, Minas Gerais, Brazil, in 1910. It weighed over 110 kg, and its dimensions were 48.5 cm long and 42 cm in diameter.

==Culture and historical/mythical usage==
Aquamarine is the [[birthstone]] associated with [[March]]. It is also the gemstone for the 19th Anniversary.

People in the [[Middle Ages]] thought that aquamarine could magically overcome the effects of [[poison]].

== See also ==
* [[List of minerals]]

ĐÄŋ== References ==
* Weinstein, Michael, 1958, ''The World of Jewel Stones'' Sheriden House, New York, pp 104-107
* Diamond Bug. [http://diamondbug.blogspot.com/2006/03/flawless-aquamarine-march-birthstone.html "Flawless Aquamarine: March Birthstone"]. Retrieved March 16, 2006.

[[Category:Silicate minerals]]
[[Category:Gemstones]]

[[bg:Аквамарин]]
[[da:Akvamarin]]
[[de:Aquamarin]]
[[et:Akvamariin]]
[[fr:Aigue-marine]]
[[lt:Akvamarinas]]
[[nl:Aquamarijn]]
[[ja:アクアマリン]]
[[no:Akvamarin]]'''Bold text''''''Bold text''''''Bold text''''''Bold text'''''Italic text''''Italic text''''Italic text''''Italic text''[[Link title]][[Link title]][[Link title]][[Link title]][[Link title]][http://www.example.com link title][http://www.example.com link title][http://www.example.com link title]
== Headline text ==

== Headline text ==

== Headline text ==

== Headline text ==

== Headline text ==
[[Image:Example.jpg]][[Image:Example.jpg]][[Image:Example.jpg]][[Media:Example.ogg]][[Media:Example.ogg]]<math>Insert formula here</math><math>Insert formula here</math><math>Insert formula here</math><math>Insert formula here</math><math>Insert formula here</math><nowiki>Insert non-formatted text here</nowiki><nowiki>Insert non-formatted text here</nowiki><nowiki>Insert non-formatted text here</nowiki><nowiki>Insert non-formatted text here</nowiki><nowiki>Insert non-formatted text here</nowiki><nowiki>Insert non-formatted text here</nowiki><nowiki>Insert non-formatted text here</nowiki>'''Bold text'''[[]]Ú
[[pl:Akwamaryn]][[pt:Água-marinha]]
[[ru:Аквамарин]]
[[sl:Akvamarin (kamen)]]
[[vi:Berin]]
[[tr:Akuamarin]]
[[uk:Аквамарин]]

Archive:Aquamarine

2005-04-07T20:47:17Z

68.237.246.162:

'''Aquamarine''' is [[gemstone]]-quality blue [[beryl]], closely related to the [[emerald]]. Aquamarines can be found in the [[United States]] in [[Colorado]] at the summit of Mt. Antero in the Collegiate Range in central Colorado. In [[Brazil]], there are mines in the states of [[Minas Gerais]], [[Espírito Santo]] and [[Bahia]].

The biggest aquamarine ever mined was found at the city of Marambaia, Minas Gerais. It weighed over 110 kg, and its dimensions were 48.5 cm long and 42 cm in diameter.

Aquamarine is the [[birthstone]] associated with [[March]].

[[USS Aquamarine (PYc-7)]] was a patrol vessel of the [[United States Navy]], named for the stone.

; See also : [[List of minerals]]

----
{{infobox color|
title=Aquamarine|hex=7FFFD4|
r=127|g=255|b=212|
c=50|m=0|y=17|k=0|
h=160|s=50|v=100
}}
'''Aquamarine''' is also a color, a shade between [[green]] and [[blue]].
; See also : [[List of colors]] 
----
'''Aquamarine''' is also the unusual [[tincture (heraldry)|heraldic tincture]] of the [[Jewish Autonomous Region]] in [[Russia]]; it is shown as a kind of dark green.

==External links==
*[http://www.jewelsforme.com/info.asp?month=3 Aquamarine - History and Folklore]

[[Category:colors]]
[[Category:Gemstones]]
[[Category:Minerals]]

[[bg:Аквамарин]]
[[da:Akvamarin]]
[[de:Aquamarin]]
[[ja:アクアマリン]]
[[pt:Água-marinha]]

Archive:Aquamarine

2005-04-06T18:02:21Z

68.237.246.162:

'''Aquamarine''' is [[gemstone]]-quality blue [[beryl]], closely related to the [[emerald]]. Aquamarines can be found in the [[United States]] in [[Colorado]] at the summit of Mt. Antero in the Collegiate Range in central Colorado. In [[Brazil]], there are mines in the states of [[Minas Gerais]], [[Espírito Santo]] and [[Bahia]].

The biggest aquamarine ever mined was found at the city of Marambaia, Minas Gerais. It weighed over 110 kg, and its dimensions were 48.5 cm long and 42 cm in diameter.

Aquamarine is the [[birthstone]] associated with [[March]].

[[USS Aquamarine (PYc-7)]] was a patrol vessel of the [[United States Navy]], named for the stone.

; See also : [[List of minerals]]

----
{{infobox color|
title=Aquamarine|hex=7FFFD4|
r=127|g=255|b=212|
c=50|m=0|y=17|k=0|
h=160|s=50|v=100
}}
'''Aquamarine''' is also a color, a shade between [[green]] and [[blue]].
; See also : [[List of colors]] 
----
'''Aquamarine''' is also the unusual [[tincture (heraldry)|heraldic tincture]] of the [[Jewish Autonomous Region]] in [[Russia]]; it is shown as a kind of dark green.

==External links==
*[http://www.jewelsforme.com/?month=03&section=Info Aquamarine - Gem of Happiness and Everlasting Youth]

[[Category:colors]]
[[Category:Gemstones]]
[[Category:Minerals]]

[[bg:Аквамарин]]
[[da:Akvamarin]]
[[de:Aquamarin]]
[[ja:アクアマリン]]
[[pt:Água-marinha]]