Disadvantages: Low visibility in brightly lit rooms and the screen has to be flat or else the image will be warped. Loud cooling fans and bulbs are expensive.
A head projector is used to project(this means show) text on computer sheet on a wall so it becomes bigger.You can use it for-watching movies-coping work-look at photosect.
Advantages: i. No refreshing is needed. ii. Very complex pictures can be displayed at very high resolution without flicker. Disadvantages: i. They ordinarily do not display color ii. Selected part of...
Traditional life could be more satisfying that living a life aided by mankind's technology. A person may be fulfilled by the idea that they sustain themselves off only the land and tools (which are...