Fisheries Extension Education (2+1)

Principle

The principle involved in the projection is that “when light falls on a transparent o r translucent or opaque object, it passes through the object or is reflected by it; then if the is made to pass through a convex lens and allowed to fall on a screen at a convenient distance, an inverted image of the object will appear on the screen”. If the object is initially kept inverted before the source of light, the image will be straight and comprehensible.