how is a periscope different from a pin hole camera?
A periscope uses 2 mirrors placed at a 45° so when light strikes the upper mirror. its reflected by 90° . down to the lower mirror , which again gets reflected 90° to make it parallel with the original light source thus allowing the viewer to see the object
A pinhole camera uses a small hole to allow light through to shine on a surface which has a photographic film on it to capture the image . while the hole acts like a lens to focus on the image . the smaller the hole, the more focus in your image . but if your hole is so small , it will not allow light to pass through and your image will be dark
A pinhole camera uses a small hole to allow light through to shine on a surface which has a photographic film on it to capture the image . while the hole acts like a lens to focus on the image . the smaller the hole, the more focus in your image . but if your hole is so small , it will not allow light to pass through and your image will be dark