This one-page litho describes the science conducted by NASA-s Swift satellite mission and provides an activity for students. It was produced in September 2004 for distribution at the Swift Launch. Swift's primary goal...
In this online activity, students use lichens and tardigrades (water bears) to investigate their use as bioindicators of key air pollutants. When lichens are exposed to some kinds of air pollutants, especially to sulfur...
Written by Tony R. Kuphaldt, Jim Palmer, and Jason Starck, this chapter of All About Circuit's second volume on Alternating Current describes inductive reactance and impedance. The chapter is divided into six sections:...
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