how do i measure the speed of a EM wave ?
- Look here. I could not explain it in an easier way. For if I told you "with mirrors" you would still have to ask "How?" --Cethegus (talk) 19:47, 30 January 2008 (UTC)
What is the definition of "simple English"? Who would call this text simple? I understand Shakespeare or E. A. Poe easier than these sentences. — This unsigned comment was added by 188.8.131.52 (talk • changes).
Thank you. I also had problems with the physical meaning of the sentence "Several types of spectra can be distinguished depending upon the nature of the radiation coming from an object." Also, the AUDIO label in the figure, and the AUDIO NOTE are a bit silly. —Preceding unsigned comment added by 184.108.40.206 (talk) 20:32, 29 June 2014 (UTC)