What is this thing, this periodic table? It's a crucial part of chemistry, and millions of students encounter this fine and elegant visualization of substances every year. Professor Norman Herr has created this helpful...
This is a great resource for science and chemistry students at the K-12 level or even postsecondary. The image shows each element of the periodic table represented by a picture of something that contains that element....
This module is intended for use in a college-level introductory course in alternative and renewable energy. The document covers basic engineering science for understanding energy. Topics like force, energy, power,...
After watching this erudite (and fun) program from NOVA, you'll never again wonder "Where's selenium?" This two-hour program is hosted by David Pogue (the host of NOVA's "Making Stuff" program) and it "spins viewers...
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