LIGHT

The white light which is evidently colourless light as  daylight or sunlight contains all the wavelengths of the visible spectrum (also known as optical spectrum) at equal intensity. It is a combination of colours; red, orange, yellow, green, blue, indigo and violet. They are always in the same order. (The mnemonic ROY G. BIV  is commonly used by students to remember the visible or optical spectrum in there order.)

The spectrum does not include all the colours that the human eyes and brain can perceive. The colors only visible to the human eye are those with wavelengths in air from about 380 - 790 nm (nanometre).

Things appear to have colour because of the colour of the light that is reflected back from them when white light hits them. If red light is reflected, an object will appear red.

Rainbow 

The rainbow is an arc of colours visible in the sky.  Rainbows appear when the sunlight or the white light meets the millions of water droplets in the atmosphere. Then the light refraction will take place at the dividing line of air and water (this dividing line is termed as prism).  The light enters the droplets  where it is split up into seven colours, unveiling the colours of the spectrum and  said as the colours of the rainbow. 

The link that follows will explain and illustrate how the seven colours of the spectrum refract… The Rainbow.

Like a ball of fire resting up in the sky is our source of natural light.  The scientific explanation of the sun is widely accepted and understood by many. But the reality of its existence will always remain a mystery to me.

The sun is the central body of the solar system.  It provides the light and energy that sustains life on earth, and its changing position relative to the earth’s axis determines the terrestrial seasons.

The sun is a star of a type known as G2 dwarf, a sphere of hydrogen and helium 1.4 km in diameter which obtains its energy from nuclear fusion reactions deep within its interior, where the temperature is about 15 million degrees Kelvin. The surface is a little under 6,000 degrees Kelvin.

The following link will explain and illustrate more about the sun… Beginnings.

Light is one of among the few things I enjoy watching ever since when I was a child.  The spectrum of colours created by prismatic light during sunrise and sunset dazzles the very core of my eye. And this leads my mind to wonder more about this spectacular phenomena.

Light in its real sense is visible  to the naked eye. It aids our eyes to see the beauty of things around us;  the wonderful colours that accentuate the heavenliness of nature; the gracefulness of sunrise in the east; and the charm and tranquility of the sunset in the west.

Whether the light is formed by nature or by a small insect such as, firefly the optical enticement to me is very powerful. Something I really cannot ignore.

I hope you will come to travel with me in this wonderful world of light…

-lynn-