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Earth Sky: Everything You Need to Know: December Solstice 2014
Winter solstice, earliest sunset, latest sunrise. It seems that, in the Northern Hemisphere anyway, these three events should happen on the same day. Read this explanation of the changing of the seasons and learn why the winter solstice...
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The Official U. S. Time
Get the official U.S. time from the official U.S. timekeepers, the National Institute of Standards and Technology (NIST), and its military counterpart, the U.S. Naval Observatory. Java needs to be enabled to see the timeclocks. There are...
Georgia State University
Georgia State University: Hyper Physics: Special & General Relativity
This site from the Georgia State University provides an interesting chart form of the ideas of relativity. Column 1 - Idea, Column 2 - Experiment. Each item is linked to its own page of explanation, which is well done. A nice type of...