Question: what is the meaning of the latin word camera obscura
Answer: Camera obscura ( plural camerae obscurae or camera obscuras ; from Latin , meaning `` dark room '' : camera `` ( vaulted ) chamber or room , '' and obscura `` darkened , dark '' ) , also referred to as pinhole image , is the natural optical phenomenon that occurs when an image of a scene at the other side of a screen ( or for instance a wall ) is projected through a small hole in that screen as a reversed and inverted image ( left to right and upside down ) on a surface opposite to the opening .