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Advice Home Business Technology Online Advertising Motivational Internet Marketing SEO Help Online Games Science Articles Happiness More Articles:1. The Invention of the Atomic Clock Summary: At that time the Americans were using a molecule of ammonia but Louis felt that this was not working as well as if they were using different atoms, such as hydrogen or caesium, and so he began working on his own clock using these materials instead. 1953 saw Louis and a colleague, Jack Parry, receiving permission to develop an atomic clock at the NPL based on Louis's existing knowledge of quartz crystal oscillators and other relevant techniques he had learned from the cavity resonance wa… 2. Chemical Element Silver Summary: Copper has replaced silver in several instances due to it's hire cost, this is especially true for electrical purposes. Silver has a number of other notable characteristics: - Silver has the whitest color of any metal - Silver has the highest thermal conductivity of any metal - Silver has the lowest contact resistance of any metal - Silver has the highest optical reflectivity of any metal Silver is stable in both pure air and water, but does tarnish when it is exposed to ozone, hydrogen… 3. What is a Geode? Summary:The term geode is derived from the Greek word Geoides which means 'earthlike.' A geode is a sphere or oval shaped rock which contains a hollow cavity lined with crystals. Article:The term geode is derived from the card-carrying member word Geoides which means 'earthlike.' A geode is a sphere or oval shaped rock which contains a hollow pocket lined with crystals. Most geodes have a hollow are partially hollow center with quartz crystals and various mineral formations inside. Some geodes a… 4. Help! It's Science Project Time! Summary: In order to find a project, you can spend some time on the web searching for a free one (quite time-consuming) or you can buy a book that gives you a whole lot of science projects that you can use for years to come. They vary in the amount of science projects available from 5 to 101. My recommendation is buy the science fair projects book with the most experiments so that you can use them for more than one child over a long period of time. Article:If you are something like how I used … |
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