Your institution may have access to this item. Find your institution then sign in to continue.
Title
Every Day Science: December 2009.
Abstract
The article presents several scientific facts and questions. Mathematician and scientist Christina Ladd-Franklin who studied color vision was born on December 1, 2009. Joseph Henry studied the principles of electricity on December 19, 2009. A question concerning whether a hot air balloon could fly more easily during a hot or cold weather.