Helium.com | View Ernest Capraro's articles http://www.helium.com/users/293067.xml View Ernest Capraro's articles en-us Copyright Helium.com Wed, 25 Nov 2009 00:56:36 GMT Wed, 25 Nov 2009 00:56:36 GMT INTRODUCTION Water purification is an important technology. It has applications around the globe, for every person needs and deserves clean water t... http://www.helium.com/items/1661227-purifying-water Wed, 25 Nov 2009 00:56:36 By middle school, most students are aware that prisms can bend light. It isn't until high school physics that polarization usually gets discussed, ... http://www.helium.com/items/1658931-optical-rotation-project Mon, 23 Nov 2009 06:28:26