First make sure the projector is set to the correct mode for the type of film inserted. Putting Super 8 film into it when it is set for regular 8 can destroy the sprocket holes. Most projectors will self-thread from the front film input and past the projection lamp. If you have a cartrudge model, it will self-thread, but if your film is on reels and you have the Cartridge model Keystone, you will have to transfer the film to blank cartridges to play them. Once the film comes out the back (or bottom, depending upon model), make sure it is placed under the tension wheel, and them loop the film up to the takup reel. You should be able to get the film to stay on the takeup reel without tape or pulling the film sideways through the slots in the reel. Use your finger to tension the tape against the reel hub as you wind it a few turns. After that, the motor on the takeup reel should be able to keep it wound.
There are several steps that need to be done properly in order to thread an 8mm movie projector. I have included a link that shows how you can thread it properly: http://www.ehow.com/how_2079814_thread-movie-projector.html.
Search the model on youtube, there's a great video there. be advised that you have to thread the film direct and out from behind the lens to rewind
The movie projector: The "lumiere" brothers (French). As for the phonograph, I dont know.
No, a movie projector uses a convex lens.
It is called a projector or a movie projector.
The movie projector uses light to project a picture. These running pictures are what people see when they watch a movie.
Mechanical
Well i put my face in front a movie projector and nothing happens its really bright though.
One answer is when an overhead/movie/computer projector does not fit the projector screen area correctly and lines can be seen around the intended area.
A bioscope is an early form of movie projector.
in was invented in 1860's
If you mean a home movie projector, your best bet are the Goodwill/Salvation Army stores, local classifieds and Craiglist.