Overhead Projector
OFFICE MACHINE – REPORT – OVERHEAD PROJECTOR
An overhead projector is a very basic but reliable form of projector. The overhead projector displays images onto a screen or wall. It consists of a large box containing a cooling fan and an extremely bright light, with a long arm extended above it. At the end of the arm is a mirror that catches and redirects the light towards the screen.
An overhead projector can be used to enlarge images onto the screen or wall for audiences to view. Transparencies can be placed onto the projector to be viewed by both the audience and the speaker. The overhead projector was once a common feature in both classrooms and business meetings. Recently, it has seen a decline in use, as more sophisticated computer based projectors are favored.
The overhead projector was first seen during World War II. It was used as a tool to train large numbers of servicemen. In the 1950s and 60s, it crossed over into the classroom as an educational tool, and then into the business world as a training tool. The overhead projector reached its sales peak in the 1990s, when almost every classroom and business place in America had one installed.
Brief History of Overhead Projector
Overhead projectors continue to be used for presentation purposes in both school and business settings despite the advancements in presentation technology. Read on to learn the humble history of, who invented and the early uses of the overhead projector. * Overhead Projector - The Early Days
Who invented the overhead projector? Unfortunately, various sources do not identify a single person. It has been said that a certain Roger Appledorn was responsible for the technology that was used for the first overhead projector. Appledorn worked in the thermal-fax department of a company and worked on the technology when a top executive discovered what he was doing. Although it was impressive, the company's marketing team did not support Appledorn's idea. Appledorn and his
An overhead projector is a very basic but reliable form of projector. The overhead projector displays images onto a screen or wall. It consists of a large box containing a cooling fan and an extremely bright light, with a long arm extended above it. At the end of the arm is a mirror that catches and redirects the light towards the screen.
An overhead projector can be used to enlarge images onto the screen or wall for audiences to view. Transparencies can be placed onto the projector to be viewed by both the audience and the speaker. The overhead projector was once a common feature in both classrooms and business meetings. Recently, it has seen a decline in use, as more sophisticated computer based projectors are favored.
The overhead projector was first seen during World War II. It was used as a tool to train large numbers of servicemen. In the 1950s and 60s, it crossed over into the classroom as an educational tool, and then into the business world as a training tool. The overhead projector reached its sales peak in the 1990s, when almost every classroom and business place in America had one installed.
Brief History of Overhead Projector
Overhead projectors continue to be used for presentation purposes in both school and business settings despite the advancements in presentation technology. Read on to learn the humble history of, who invented and the early uses of the overhead projector. * Overhead Projector - The Early Days
Who invented the overhead projector? Unfortunately, various sources do not identify a single person. It has been said that a certain Roger Appledorn was responsible for the technology that was used for the first overhead projector. Appledorn worked in the thermal-fax department of a company and worked on the technology when a top executive discovered what he was doing. Although it was impressive, the company's marketing team did not support Appledorn's idea. Appledorn and his