The crispness of the picture is actually very similar to what you might have at home. A cinema projector has a light blub inside that helps shine the movie onto the big screen. Your projector at home also has a light bulb but it’s just not as strong as the light inside the cinema projector.
The stronger the light bulb the bigger the movie can be. But the crispness is actually very similar to what you see at home. The light bulb inside the cinema projector is so strong that it needs to be cooled down or it could create a fire. So upstairs in the projection room, the cinema will have special tubes that suck the hot air out of the projector and keep it cool. This is why you can’t have a cinema projector at home.
They also cost more than mummy and daddy can afford.
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