Wikipedija

Datoteka:Chirality with hands.jpg

Chirality_with_hands.jpg (250 × 170 piksela, veličina datoteke: 15 KB, MIME tip: image/jpeg)


Logo Wikimedijinog spremnika Ova se datoteka nalazi na Zajedničkom poslužitelju i mogu je rabiti drugi projekti. Ispod je prikazan opis s njezine tamošnje stranice.
Dostupna je vektorska inačica (SVG) ove slike. Trebala bi se koristiti umjesto ove rasterske slike ako je kvalitetnija.
File:Chirality with hands.jpg → File:Chirality with hands.svg
Za više informacija o vektorskoj grafici, pročitajte o prelasku Zajedničkog poslužitelja na SVG.
Također pročitajte informacije o podršci MediaWiki softvera slikama u SVG formatu.
Na drugim jezicima
Alemannisch ∙ العربية ∙ беларуская (тарашкевіца) ∙ български ∙ বাংলা ∙ català ∙ нохчийн ∙ čeština ∙ dansk ∙ Deutsch ∙ Ελληνικά ∙ English ∙ British English ∙ Esperanto ∙ español ∙ eesti ∙ euskara ∙ فارسی ∙ suomi ∙ français ∙ Frysk ∙ galego ∙ Alemannisch ∙ עברית ∙ hrvatski ∙ magyar ∙ հայերեն ∙ Bahasa Indonesia ∙ Ido ∙ italiano ∙ 日本語 ∙ ქართული ∙ 한국어 ∙ lietuvių ∙ македонски ∙ മലയാളം ∙ Bahasa Melayu ∙ norsk bokmål ∙ Plattdüütsch ∙ Nederlands ∙ norsk nynorsk ∙ norsk ∙ occitan ∙ polski ∙ prūsiskan ∙ português ∙ português do Brasil ∙ română ∙ русский ∙ sicilianu ∙ Scots ∙ slovenčina ∙ slovenščina ∙ српски / srpski ∙ svenska ∙ தமிழ் ∙ ไทย ∙ Türkçe ∙ татарча / tatarça ∙ українська ∙ vèneto ∙ Tiếng Việt ∙ 中文 ∙ 中文（中国大陆） ∙ 中文（简体） ∙ 中文（繁體） ∙ 中文（马来西亚） ∙ 中文（新加坡） ∙ 中文（臺灣） ∙ 中文（臺灣） ∙ +/−
Nova SVG slika

Sažetak

Opis

Amino Acid Chirality

chirality with hands from http://www.nai.arc.nasa.gov/ A "chiral" molecule is one that is not superimposable with its mirror image. Like left and right hands that have a thumb, fingers in the same order, but are mirror images and not the same, chiral molecules have the same things attached in the same order, but are mirror images and not the same.

Although most amino acids can exist in both left and right handed forms, Life on Earth is made of left handed amino acids, almost exlusively. No one knows why this is the case. However, Drs. John Cronin and Sandra Pizzarello have shown that some of the amino acids that fall to earth from space are more left than right. Thus, the fact that we are made of L amino acids may be because of amino acids from space.

Why do amino acids in space favor L? No one really knows, but it is known that radiation can also exist in left and right handed forms. So, there is a theory called the Bonner hypothesis, that proposes that left handed radiation in space (from a rotating neutron star for example) could lead to left handed amino acids in space, which would explain the left handed amino acids in meteorites. This is still speculative but our paper makes it much more plausible. In fact, this observations was one of the main reasons why we persued this research. Although there were theories about how the amino acids could form in space in the ice, no one had shown that it was viable to make amino acids this way, until now.
Izvor

http://web99.arc.nasa.gov/~astrochm/chirality.jpg (original location)

http://nai.nasa.gov/library/images/news_articles/159_1.jpg
Autor NepoznatUnknown author

Licencija

Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
Warnings:

Opisi

Dodajte kratko objašnjenje što predstavlja ova datoteka

Predmeti prikazani u ovoj datoteci

motiv

vrsta medija

image/jpeg

checksum engleski

adcffd5cd994a6a9a8d8b8c9ead714cd0d24b47b

način određivanja: SHA-1

data size engleski

14 848 Bajt

visina

170 točka

širina

250 točka

Povijest datoteke

Kliknite na datum/vrijeme kako biste vidjeli datoteku kakva je tada bila.

Datum/VrijemeMinijaturaDimenzijeSuradnikKomentar
sadašnja15:40, 6. ožujka 2008.Minijatura za inačicu od 15:40, 6. ožujka 2008.250 × 170 (15 KB)Jacopo Werther{{Information |Description= Amino Acid Chirality chirality with hands from http://www.nai.arc.nasa.gov/ A "chiral" molecule is one that is not superimposable with its mirror image. Like left and right hands that have a thumb, fingers in the same order, b

Nijedna stranica ne rabi ovu datoteku.

Globalna uporaba datoteke

Sljedeći wikiji rabe ovu datoteku:

Dobavljeno iz "https://hr.wiki.x.io/wiki/Datoteka:Chirality_with_hands.jpg"