How High is that Kite?
There is nothing quite like flying a kite on one of the first breezy days of spring. Is it possible to determine how high a kite is flying from a photograph? What would you need [...]
Angular Velocity to Linear Velocity
It is one thing to read about a tire rotating at a specified number of revolutions per second. It is another to be able to visualize it. When you add lights to bike tires and [...]
Just How Tall Was That Snowman?
You have to love people who make lemonade from lemons. A recent photo circulating in FaceBook made me envious, for just a fraction of a second, of the people in Boston who are dealing with the [...]
What Americans Spend on Holidays
The National Retail Foundation sends out press releases that outline their predictions for consumer spending each holiday season. The 2007 - 2009 recession is quite evident in the dips in the charts of the predictions. [...]