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Why do overhead projectors use convex lens?
because projectors are big and if it has a lot of stuff to show on a projector then it will have to use a convex mirror to be able to see all of it...
What are the disadvantages of using thermometers that do not contain mercury?
They are edible
What are the Advantages and disadvantages of using a barometer?
An advantage of using a barometer is that you can measure air pressure.
What are some possible disadvantages to using ball screws?
The disadvantages of using ball screws are that they are expensive, they can be back driven and they don't work effectively for hand-fed machine tools.
What are the disadvantages of using ciss in your printer?
lid of the printer cannot be closed
What are the advantages of using presentation software?
You don't need a slide projector or an overhead projector.
What are the dangers of using a overhead projector?
The projector can reach a pretty high temperature if left on for a while. So I think the main danger of an overhead projector is simply the heat. ;)
When was overhead projector invented?
The overhead projector was invented in the 1960's.
What are the functions of overhead projector?
The function of an overhead projector is to show information on a screen using transparencies. Everything on the transparency had to be first printed backwards so that it would show on the screen in the right order.
More disadvantages of a multimedia projector?
Multimedia Projector disadvantages
What is the future of the overhead projector?
My guess is that with LCD and DLP projector coming down in price, we will be seeing less and less of the overhead. When a video projector is used with an interactive whiteboard or tablet the possibilities are limitless.
A person who operates overhead projector?
projectionist
How do you say overhead projector in spanish?
retroproyector
What are the functions of projector?
The function of an overhead projector is to show information on a screen using transparencies. Everything on the transparency had to be first printed backwards so that it would show on the screen in the right order.
How many educator now a days are using overhead projector?
As high tech electronics are becoming more popular these days, the use of overhead projectors have deteriorated. More people are using "Smart" boards or "E" boards. The use of overhead projectors are slim to none.
What is the Advantage of overhead projector in teaching?
Using projector can look neat and professional. Masking way can be used to hide the content that you haven't say them. Then you can reveal one piece of information at a time when you talk about it.
What is the name of the device that allows you to project pictures from a book?
This is referred to as an opaque overhead projector, or sometimes simply as an "opaque projector." This is in contrast to the regular overhead projector which must have transparencies to project, an opaque projector can project an image of opaque objects such as the paper pages of a book.
