File:Carbon-14 with activity labels.png

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Carbon-14 record for last 1,100 years (inverted scale). Solar activity events labeled.

{{ImageNote|id=1|x=340|y=330|w=10|h=10|dimx=1000|dimy=402|style=2}} Changes in carbon-14 concentration in the Earth's atmosphere, which serves as a long term proxy of solar activity. Note the present day is on the right-hand side of this figure. {{ImageNoteEnd|id=1}}

This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

Bahasa Indonesia ∙ català ∙ čeština ∙ Deutsch ∙ eesti ∙ English ∙ español ∙ français ∙ galego ∙ italiano ∙ Nederlands ∙ português ∙ polski ∙ sicilianu ∙ suomi ∙ Tiếng Việt ∙ Türkçe ∙ български ∙ македонски ∙ русский ∙ മലയാളം ∙ 한국어 ∙ 日本語 ∙ 中文 ∙ 中文（简体） ∙ 中文（繁體） ∙ العربية ∙ فارسی ∙ +/−

Source: http://pubs.usgs.gov/fs/fs-0095-00/

File history English Wikipedia

 (del) (cur) 11:10, 24 November 2005 . . Dragons flight . . 1000x402 (34130 bytes) (cleaner version)
 (del) (rev) 23:48, 21 February 2005 . . SEWilco . . 1002x317 (24858 bytes) (Carbon-14 record for last 1,100 years (inverted scale). Solar activity events labeled. PD-USGov-Interior-USGS Source: http://pubs.usgs.gov/fs/fs-0095-00/)

File history

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	Date/Time	Dimensions	User	Comment
current	12:07, 2 June 2012	1,000 × 402 (70 KB)	SeL media	second attempt :-)
	11:51, 2 June 2012	1,000 × 402 (70 KB)	SeL media	un-inverted time scale
	23:54, 17 December 2005	1,000 × 402 (33 KB)	Saperaud~commonswiki	EN: 11:10, 24 November 2005 . . Dragons flight . . 1000x402 (34130 bytes) (cleaner version)
	11:34, 19 May 2005	1,002 × 317 (24 KB)	Xgarciaf~commonswiki	Carbon-14 record for last 1,100 years (inverted scale). Solar activity events labeled. {{PD-USGov-Interior-USGS}} Source: http://pubs.usgs.gov/fs/fs-0095-00/