Question

PRINCIPLE, CONSTRUCTION &WORKING OF A PIN HOLE CAMERA ​

Answer 1

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❥︎PRINCIPLE :

When the shutter is opened, light shines through to imprint an image on photographic paper or film placed at the back of the camera. Pinhole cameras rely on the fact that light travels in straight lines – a principle called the rectilinear theory of light. This makes the image appear upside down in the camera.

❥︎CONSTRUCTION :

The pinhole may be punched or drilled using a sewing needle or small diameter bit through a piece of tinfoil or thin aluminium or brass sheet. This piece is then taped to the inside of the light-tight box behind a hole cut through the box. A cylindrical oatmeal container may be made into a pinhole camera.

❥︎WORKING :

A pinhole camera is a simple camera, without lens, in the shape of a box. One of the sides has a small hole and it produces an inverted image of the outside world at other side.The image of the outer object is created inverted on the inner box translucent screen.

Answer 2

When the shutter is opened, light shines through to imprint an image on photographic paper or film placed at the back of the camera. Pinhole cameras rely on the fact that light travels in straight lines – a principle called the rectilinear theory of light. This makes the image appear upside down in the camera.