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The screen is curved to correct the focus at the edges.
With a large screen, the distance to the edges from the centre is enough to affect the focus from the projector.
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∙ 12y ago
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How is light reflected off of a concave mirror?
The way light is reflected is different in a concave mirror depending on the position and distance from the object. when light hits the concave mirror when it is near the object, the rays are scattered and it forms a virtual image, i.e it does not come on the screen. the image will be erect and higly magnified. When it is taken further from the object, the image becomes inverted and real, i.e it can be seen on a screen, and will still be magnified.
Why is a concave mirror said to have real focus?
If parallel rays (for example sun rays witch are almost parallel) falls on concave mirror, they are gathered at a point, where maximum heat can be generated and it is very small point,witch is called real focus. As we can take it on screen, it is called real focus.
What mirror is makeup mirror concave convex or plane mirror?
concave
What is a sentence for concave lens?
A Concave lens is used to correct short- sightedness.
Why inner curved surface is known as Concave mirror?
Inner curved surface is known as concave mirror because inner side of the spherical mirror is polished to reflect the light is called concave mirror,and concave mirror is know because concave mirror converges parallel beam of light.
Which type of reflection takes place on cinema screen?
in a cinema screen diffuse reflection takes place
What different by film and cinema?
a film you watch on a much smaller screen and a cinema screen is much bigger , louder and better¬!
How is light reflected off of a concave mirror?
The way light is reflected is different in a concave mirror depending on the position and distance from the object. when light hits the concave mirror when it is near the object, the rays are scattered and it forms a virtual image, i.e it does not come on the screen. the image will be erect and higly magnified. When it is taken further from the object, the image becomes inverted and real, i.e it can be seen on a screen, and will still be magnified.
Is it possible for a concave lens to for an image on a screen?
yes
What is a difference between concave mirror and concave lens?
A concave mirror is usually used to project something onto a screen. A concave lens is usually used to view an image through the naked eye.
Could a concave lens project an image on a screen?
Not by itself.
When was the wide-screen cinema invented?
1952
Why cinema screen are rectangular?
Because the screen blends in well with the golden rectangle
How long do movies screen for in the cinema?
17 weeks
What type of image is formed on a cinema screen?
Real image
What is mm in 70mm measurement of cinema screen?
Mini miles
How big is a cinema screen in inches?
Square metres.
