Day: April 24, 2022

When Projectors Get Really Portable

We all remember overhead projectors from our science class. They were bulky items of kit that took two of us to move from them from the store cupboard to the classroom and we were warned not to jolt them as the bulb was incredibly fragile and cost hundreds of pounds to replace. Terrifying – we thought the bill would be sent to our parents so we would handle with great care.

These types of projector had one major failing – you could only use them with acetate plastic and a dynamic presentation was essentially handled …