Greetings again to all and I hope you are all well, Greetings again to all and I hope you are all well, in this opportunity I want to share with you a small practical experience related to the essential phenomenon of light and some of the intrinsic phenomena related to it through its propagation, remember that light is one of the phenomena most used by humanity in all its aspects, where we can not leave aside the valuable fields such as science-technology-education.

The white or visible light which corresponds to the electromagnetic spectrum is made up of several wavelengths which makes it really unique and such effect I can demonstrate from my house and so can you, thanks to the light we can observe everything around us representing the same unit of energy transport of each image of the objects or bodies around us.

Always at the level of education it is important to highlight the enormous value of the phenomenon of light, this phenomenon like many others depends on the essential phenomenon of movement which we will use externally to observe in greater detail the phenomenon of scattering of white or visible light which without it would be impossible for our natural optical systems to see the wonderful universe that surrounds us.

For this small practical experience it is necessary to know some of the materials that we will implement, which are described below:

• CD.
• Packing tape.
• Light emission source.
• Various wood fragments.
• Liquid silicone.

The purpose is to continue to know in more detail the phenomenon of light and all those phenomena related to it, one of the most prominent examples for the scattering of light is the formation of a rainbow and we have all ever witnessed this phenomenon which is generated naturally, this time we will do it artificially with the simple materials indicated above.

First I proceed to remove the metallic crust covering the CD with the help of the packing tape as you can see in the following picture.

Then I proceeded to make a groove in one of the pieces of wood in order to fix the CD in it as shown below:

It is important to cover the center of the CD with any kind of material such as cardboard, Foami, cardboard, among others, as you can see in the following picture:

Then I proceeded to the realization of a small rail where I can give movement to the CD inserted in the piece of wood that you could see in the previous image, everything described above can be seen in the next image:

If you wish, you can attach a small lever to the wood that holds our CD in order to facilitate its movement at the moment of light decomposition, as you will see below.

The following images correspond to the light of a cell phone flashlight.

Now use a candle as a light source with the purpose of showing that different light sources around us can decompose their light, the above described can be seen in the following image:

We can clearly say that we have been able to decompose both sources of visible light generation by observing their different wavelengths which, when passing through our complex ocular system, represent different colors as those observed in the previous images.

It is always a real delight to enjoy the understanding of the phenomenon of light as in this case in its presentation related to its dispersion or decomposition, demonstrating again that it is made up of several colors as is constituted by the light emitted by our central star, the Sun.

Note: The images are property of the author and the animated gif was made through the PhotoScape application.

Bibliographic reference consulted and recommended

[1]Light Scattering.