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| Keywords: Thorium Emission Lamp (13586723704).jpg A thorium emission lamp's violet glow when viewed through a spectroscope metal tube on right in top image is split into a spectrum of thousands of bright lines bottom image New measurements of these lines could help astronomers search for earthlike planets around distant stars See also http //www nist gov/pml/div684/thorium-032614 cfm www nist gov/pml/div684/thorium-032614 cfm Credit NIST Disclaimer Any mention of commercial products within NIST web pages is for information only; it does not imply recommendation or endorsement by NIST Use of NIST Information These World Wide Web pages are provided as a public service by the National Institute of Standards and Technology NIST With the exception of material marked as copyrighted information presented on these pages is considered public information and may be distributed or copied Use of appropriate byline/photo/image credits is requested https //www flickr com/photos/usnistgov/13586723704/ Thorium Emission Lamp 2014-03-21 14 50 https //www flickr com/people/63059536 N06 National Institute of Standards and Technology PD-USGov National Institute of Standards and Technology https //flickr com/photos/63059536 N06/13586723704 2016-09-07 01 54 31 United States Government Work Uncategorized 2016 October 31 | ||||
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