../.. Jalbum 8.6 <div class="fotopedia_widget_dark_unframed" id="fotopedia_widget" style="width: 600px"><script src="http://widgets.fotopedia.com/en/Electroscope/widget/width/600/skin/dark_unframed" type="text/javascript"> </script><p><a href="http://www.fotopedia.com/en/Electroscope">Electroscope</a> on <a href="http://www.fotopedia.com">Fotopedia</a></p></div> <blockquote> An electroscope is an early scientific instrument that is used to detect the presence and magnitude of electric charge on a body. It was the first electrical measuring instrument. The first electroscope, a pivoted needle called the versorium, was invented by British physician William Gilbert around 1600.[1] The pith-ball electroscope and the gold-leaf electroscope are two classical types of electroscope that are still used to demonstrate electrostatics. A type of electroscope is also used in the quartz fiber radiation dosimeter. This article is licensed under the GFDL. It uses material from Wikipedia content. </blockquote> slides/DSC_0029.JPG# Sun, 28 Feb 2010 14:28:31 +0000 slides/DSC_0029.JPG slides/DSC_0030.JPG# Sun, 28 Feb 2010 14:28:31 +0000 slides/DSC_0030.JPG slides/DSC_0031.JPG# Sun, 28 Feb 2010 14:28:31 +0000 slides/DSC_0031.JPG slides/DSC_0032.JPG# Sun, 28 Feb 2010 14:28:31 +0000 slides/DSC_0032.JPG slides/DSC_0033.JPG# Sun, 28 Feb 2010 14:28:31 +0000 slides/DSC_0033.JPG slides/DSC_0034.JPG# Sun, 28 Feb 2010 14:28:31 +0000 slides/DSC_0034.JPG slides/DSC_0035.JPG# Sun, 28 Feb 2010 14:28:31 +0000 slides/DSC_0035.JPG slides/DSC_0037.JPG# Sun, 28 Feb 2010 14:28:31 +0000 slides/DSC_0037.JPG slides/DSC_0109.JPG# Sun, 28 Feb 2010 14:28:31 +0000 slides/DSC_0109.JPG