THIS DAY IN SCIENCE: Sydney Opera House Opens in 1983

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Physics Equations

Physics Equations

Everywhere that physics is discussed it is safe to presume that the language of mathematics is never too far away. If we were to eavesdrop on these conversations, whether they occur in front of a blackboard or seated at a cafe with large enough napkins, we would not...
Student Activity/Teacher Demo: Spinning Dish

Student Activity/Teacher Demo: Spinning Dish

In this demo, two polyethylene strips are charged on one end by rubbing with wool. One charged strip is then mounted on an evaporating dish and the other charged strip is used to make the dish spin. As both strips become negatively charged when rubbed with wool they...
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