How to Troubleshoot a 3M 9100 Overhead Projector?

Answer Run through a few troubleshooting steps with your 3M 9100 Overhead Projector before taking it in to a service technician. Problems can occur with optical consumer goods, whether it be an issue with... Read More »

Top Q&A For: How to Troubleshoot a 3M 9100 Overhead Projector

Who invented the overhead projector?

Suaing Chong, a native of China, invented an early version of the overhead projector for U.S. military training and police identification work. Roger Appledorn, an engineer with 3M, invented the mo... Read More »

Who invented the first overhead projector?

Roger Appledorn invented the overhead projector in the 1960s. Appledorn was working at 3M at the time of his invention. He and his colleagues demonstrated the machine to school administrators, and ... Read More »

How to Use an Overhead Projector in the Classroom?

Using an overhead projector in modern day classrooms may seem a bit antiquated. However, an overhead projector facilitates the display of an informative, clear and concise presentation. There is an... Read More »

Who was the inventor of the overhead projector?

The overhead projector was originally created by Roger Appledorn in the 1960s while he was working for the 3M corporation. The projector was met with little initial success, but was later labeled t... Read More »