Pinhole photography

RESEARCH

Pinhole cameras work by light rays from an object passing through a small hole to form an inverted image.

A pinhole camera has no lens, but a single small aperture.

Light sensitive paper is put into a light-proof box with a small hole on one side.
The light rays from the scene pass through this hole and projects an inverted image on the opposite side of the box, onto the paper.
A pinhole camera requires a large exposure to produce the image.
Therefore, its shutter may be manually operated.
A flap made out of light-proof material can be used to cover and uncover the hole.

Pinhole cameras were initially used to provide safety for the eyes when viewing solar eclipses or capturing the movement of the sun over a long period of time. This photography is called solargraphy. 

Exposure time can range from, usually, anything above 5 seconds, depending on the type of image you want produced.

Pinhole photography experiment:

For this image, I got one of my peers to stand in front of the camera for 10 seconds, whilst others walked into scene.
I like how the image almost looks ghostly, as my peers are transparent.
To improve this image, I would get my peers to just walk straight past the scene, instead of standing in it, to get a blurred effect, which would make it look more ghostly.