What Is Light Made Of

Our eyes see different wavelengths of light as different colours.

What is light made of. Red light has the longest wavelength and violet purple light has the shortest. Over the centuries our view of light has changed dramatically. Visible light is a very thin slice of the electromagnetic spectrum from wavelengths of about 400 to 700 billionths of a metre about the width of an e. White light is made up of many different colors of light added together.

When white light shines through a prism it splits up into different colors becoming a spectrum. Coli bacterium or about 1 the width of a. The next major development was the arc light. Visible light in its simplest terms is a release of energy in the form of a packet of electromagnetic radiation which is perceived by the human eye as light.

This property forms the basis of the fields of optics and optical communications and a myriad of related technologies both mature and emerging. Technological applications based on the manipulations of light include lasers holography and fibre optic telecommunications systems. Some lightning flashes are made up of as many as 25 or more lightning bolts strokes. Light from a torch or the sun is a good example of this.

Light is produced through either natural or artificial means such as with the sun or a light bulb respectively. They move so fast that your eyes only see one flash. Light comes from different sources called light sources. Thanks to light we see life in glorious colour.

Our main natural light source is the sun. We actually know more or less what it is. Many of these theories sought to describe light as a ray a straight line moving from one point to another pythagoras best known for the theorem of the right angled triangle proposed that vision resulted from light rays emerging from a person s eye and striking. In most everyday circumstances the properties of light can be.

Light certainly has puzzled the greatest minds for centuries but landmark discoveries made over the last 150 years have robbed light of its mystery. Lasers are extremely dangerous and can cause permanent eye damage. Lightning is fun to watch. Light transmits spatial and temporal information.

In 1802 davy showed that electric currents could heat thin strips of metal to white heat thus producing light. The first attempts at using electric light were made by english chemist sir humphry davy. White light is actually made of all of the colours of the rainbow because it contains all wavelengths and it is described as polychromatic light. Scientists have learned some facts about lightning from pictures.

This was the beginning of incandescent defined as glowing with intense heat electric light. The first real theories about light came from the ancient greeks. Light from a laser is monochromatic which means it only produces one colour.