This was made at night so the passenger throwing a tennis ball can be seen through the half-silvered glass window of the elevator. Each frame of the movie has been retouched so the elevator and ball are easier to locate.

E-I Series (Person tossing ball in elevator; camera in elevator)

The first two movies were made inside the elevator as it moves at roughly a constant speed.

The third movie shows the elevator accelerating upward. The speed and acceleration of the elevator can be measured using a corner of the window in the background (the bars seen in the background are in several different planes, so it is best to use a point on the left where a bar meets the wall.)

The last toss in this series of tosses is the one shown in the movie E-IU.mp4

These movies were made by Bob Teese at the Hyatt Regency Hotel in New Orleans, with the help of Patrick Cooney, Dennis Kuhl and Mark Luetzelschwab.

Financial support for producing the Technical Physics Video Series was provided by the Green Educational Foundation, the National Science Foundation, Dickinson College, Muskingum College and Tufts University.