../.. Jalbum 8.6 <div class="fotopedia_widget_dark_unframed" id="fotopedia_widget" style="width: 600px"><script src="http://widgets.fotopedia.com/en/Spectroscopy/widget/width/600/skin/dark_unframed" type="text/javascript"> </script><p><a href="http://www.fotopedia.com/en/Spectroscopy">Spectroscopy</a> on <a href="http://www.fotopedia.com">Fotopedia</a></p></div> <blockquote> Spectroscopy was originally the study of the interaction between radiation and matter as a function of wavelength (λ). In fact, historically, spectroscopy referred to the use of visible light dispersed according to its wavelength, e.g. by a prism. Later the concept was expanded greatly to comprise any measurement of a quantity as function of either wavelength or frequency. Thus it also can refer to a response to an alternating field or varying frequency (ν). A further extension of the scope of the definition added energy (E) as a variable, once the very close relationship E = hν for photons was realized (h is the Planck constant). A plot of the response as a function of wavelength—or more commonly frequency—is referred to as a spectrum; see also spectral linewidth. This article is licensed under the GFDL. It uses material from Wikipedia content. </blockquote> slides/DSC_0008_01.JPG# Sun, 28 Feb 2010 14:28:37 +0000 slides/DSC_0008_01.JPG slides/DSC_0003.JPG# Sun, 28 Feb 2010 14:28:37 +0000 slides/DSC_0003.JPG slides/DSC_0013.JPG# Sun, 28 Feb 2010 14:28:37 +0000 slides/DSC_0013.JPG slides/DSC_0015.JPG# Sun, 28 Feb 2010 14:28:37 +0000 slides/DSC_0015.JPG slides/DSC_0017.JPG# Sun, 28 Feb 2010 14:28:37 +0000 slides/DSC_0017.JPG slides/DSC_0018.JPG# Sun, 28 Feb 2010 14:28:37 +0000 slides/DSC_0018.JPG