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July 13, 2016
January 28, 2016
June 18, 2012
Reverted edits by Enidblyton11 (talk) to last revision by Jcw
m+459
Undo revision 876562 by Jcw (talk)
-459
June 7, 2011
April 25, 2011
April 3, 2008
January 4, 2008
November 12, 2007
Undo revision 332130 by Special:Contributions/TerryH (User talk:TerryH) this one was actually legit
m+11
Reverted edits by Jameson (Talk); changed back to last version by Ed Poor
m-11
no edit summary
+11
July 6, 2007
Electromagnetic radiation travels in waves.
m+4
let's be consistent when using metric units
-9
Scientists use the length of the wave (the distance between peaks) to define the energy of the radiation. Astronomers measure this length in "angstroms," a unit of measure equal to 1 hundred-millionth
+684
June 20, 2007
June 2, 2007
the Swedish varianst aren't used in English
-85
used to measure wavelengths of light
+56
original name, symbol, Swedish physicist
+138