Summary

This file was moved to Wikimedia Commons from en.wikipedia using a bot script. All source information is still present. It requires review. Additionally, there may be errors in any or all of the information fields; information on this file should not be considered reliable and the file should not be used until it has been reviewed and any needed corrections have been made. Once the review has been completed, this template should be removed. For details about this file, see below. Check now!

Licensing

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 ∙ +/−

Original upload log

• 2005-02-21 21:46 SEWilco 1006×332× (24073 bytes) Carbon-14 record for last 1,100 years (inverted scale). Sunspot record since A.D. 1700 shown in red. There is a 20-60 year delay for solar activity to show in carbon-14. {{PD-USGov-Interior-USGS}} Source: http://pubs.usgs.gov/fs/fs-0095-00/