Ever wonder what trees, water skimmers and laundry detergent have in common? It turns out that the physical concept of surface tension is essential to their function. The idea behind surface tension ...

A small, flat piece of Styrofoam, at least about three inches by three inches (For example, this could be part of a take-out container or a sheet of packaging.) Utility or EXACTO knife and an adult ...

There are some fluids which offer resistance to motion. This resistance of fluid to motion is like internal friction which is similar to friction when solid moves on a surface. This is called ...