An overhead projector is a device that displays images, text, or diagrams onto a surface, such as a wall or projection screen, by shining light through transparent sheets. It is commonly used in classrooms, meetings, and presentations. The user places a transparent sheet with written or printed content on the projector’s glass surface, and the image is magnified and shown to the audience. Overhead projectors are often used for teaching or displaying visual information to a group, offering a simple way to share content in real time.

What is an "overhead projector"?

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overhead projector

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“overhead projector”的英语定义和含义

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