Recently added articles: Stellar parameters, rowing boats, water propelled rockets.

Recently added material in ScienceBits includes:
  • Estimate the basic stellar parameters using the tendency for energy equipartition. In particular, the temperature at the center of the sun, the mass-radius relationship of white dwarfs and their Chandrasekhar limit are all estimated. These were taken from my order-of-magnitude course notes.
  • Row Row Row your boat, but at which maximum speed? This is a classic example of an order of magnitude analysis giving a lot of physical insight (and impressive predictive power).
  • Analysis of the classic homemade water rocket, taken straight out of my first year physics majors classical mechanics notes. There is even a rocket simulator with which the trajectory can be calculated and graphed.

Why do I hate Microsoft?

Blog topic: 
No, I don't hate Bill Gates. He is doing what everyone would do in a similar situation. Could I hate a man I envy? What I do hate is Microsoft products which aim at the lowest common denominator, the fact that Microsoft is deliberately ruining the software industry, and that most windowers don't realize it and are happy with Microsoft's mediocracy.

Recently added articles: (1) On Global Warming (2) Snow above freezing

Recently added material in ScienceBits includes:

Shas and Shinui Knesset Parties as the Lotka-Volterra equation

The demise of Shinui party in the last Israeli parliamentary elections (March 2006), made me realize that Shas and Shinui should probably follow the Lotka-Volterra equation. As I explain below, the problems are not totally equivalent for several reasons. Nonetheless, many of the L-V elements exist in the Shas/Shinui pray/predator system...