HUMAN EYE PART - II

 Have you ever thought why during the sunrise and sunset the sun appears red WHY?

 While sunset and sunrise, the colour of the sun and its surrounding appear red. During sunset and sunrise, the sun is near to horizon, and therefore, the sunlight has to travel larger distance in atmosphere. Due to this, most of the blue light (shorter wavelength) is scattered away by the particles. The light of longer wavelength (red colour) reaches our eye. This is why sun appear red in colour.

Why the danger signal or sign is made of red colour?

Red colour scatters the most when strikes the small particle of fog and smoke because it has the maximum wavelength (visible spectrum). Hence, from large distance also, we can see the red colour clearly.

At noon sun appears white: At noon, the sun is overhead and sunlight would travel shorter distance relatively through the atmosphere. Hence, at noon, the sun appear white as only little of the blue and violet colours are scattered.

WHY DOES THE SKY APPEARS BLUE ----

The blue colour scatters more due to the less wavelength there fore the sky appears blue.THE SKY DOES NOT APPEAR PURE BLUE IT IS MIXED VIOLET AND BLUE

Reason ----------

NOTE- VIBGYOR IT HAS THE HIGHEST WAVELENGTH OF COLOUR RED AND THEN IN Decreasing ORDER TO ORANGE,YELLOW,GREEN,BLUE,INDIGO, VIOLET. VIOLET HAVE THE Least WAVELENGTH THAN ALL THE COLOURS AND THE COLOURS WHICH HAVE MORE WAVELENGTH WILL SCATTER LESS THEREFORE VIOLET WILL SCATTER MORE DUE TO MORE WAVELENGTH AND BLUE ALSO SCATTER THE MOST DUE TO THE LESS WAVELENGTH.