Tagged: The light

Rainbow 0

What are the different types of rainbows ?

Rainbow A group of refractions and reflections of sun rays occurs when the sun is incident on the water drops or snow crystals suspended in the air leading to analysing the light into a...

Periscope of submarine 16

The importance, structure and uses of periscope

The periscope is an instrument for observation over, around or through the object, obstacle or condition that prevents direct line-of-sight observation from the observer’s current position, The periscope is used to monitor the dangerous...