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While you are sitting there having fun surfing the web, I'm working as fast as I can to get this content authored!
| I have always been surprised by the number of people--even ones with astrophysics degrees--who have a completely warped concept of the sizes involved with space. This is an article (complete with visuals) that tries to put some of the more common astronomical scales into perspective. |
| Back in college, a friend of mine posed a good question to me that I did not know how to answer. Though I never actively tried to persue it, it always nagged at the back of my mind. One day around 7 years later, while standing in the shower one evening, it dawned on me: a solution so simple I could calculate in my head! I, of course, immedietly felt stupid that I had not thought of it 7 years earlier. Here is that story. |
| A couple years ago, I wrote this Mathematica Notebook to explicitly calculate all the important relativity tensors from the metric tensor. If you already are familiar with general relativity's tensors, this notebook is pretty self explanitory to use. By default, I have it set to calculate the values of the tensors with the metric for a spherical surface. |
(c)2005, Jeff Reinecke. |