If somebody ask you Protective Wrap for Camera Lens what's the colour of the sky, then you will surely answer that it is blue. But really it doesn look blue all of the time. You may have also seen the sky in various colours like red, orange, yellow and amber beneath the white clouds. Have you ever wondered where they come from? The aim of this science fair project would be to show you various hues from the sky.

Materials Required:

 1. A flash light

 2. A transparent container with parallel sides (a 10 litre aquarium is ideal)

 3. 250 ml (1 cup) of milk

 How to carry out the experiment?

1. Fill the container up to ?with water following setting it on a table where you are able to see it from all sides.

2. Following lighting the flash light hold it against the side from the container in such a way that its beam shines through the water. Watch the beam shining via Eyecup for 450D the water. May be whilst watching, you are able to see some dust particles floating in water and they appear white. Nevertheless it's small bit challenging to see precisely where the beam passes through the water.

3. Pour 60ml (1/4 cup) of milk towards the water and stir it nicely. After that, once more hold the flashlight towards the side from the container as you done prior to. You are able to now notice that the beam of light is effortlessly visible as it passes through the water. Watch at the beam from each the side and from the end, exactly where the beam shines out from the container. The beam will appear as blue from the side and somewhat yellow from the finish.

4. Now add an additional ?cup of milk towards the water and stir it. Then you can see the beam of light looks even bluer from the side and much more yellow, perhaps even orange from the finish.

Can guess the cause for the beam of light from the flash light to look blue from the side and orange from the finish? The property of light is that it usually travels in straight lines, unless it encounters the edges of some material. Just consider the case when a beam of flash light travelling via air. Because the air is uniform and also the light from the flash light travels in a straight line, we cannot see the beam from the side. Exactly the same factor will happen when the beam travels through water also. The water is uniform and also the beam travels in straight line. But when there is some dust in the air or water, we can catch the glimpse from the beam because the light is scattered by the edges of the dust particles.

Whilst adding milk to the water, you are adding a lot of tiny particles to the water because milk consists of numerous tiny particles such as protein and fat. These Flash Diffuser Cover for Pentax tiny particles will suspend in water. These particles will cause scattering of light and produced visible from the side. The scattering different colours will be various like the scattering of blue light is much more than that of red light. Because we see the scattered light from the side from the beam, and blue light is scattered much more, the beam appears blue from the side. Because the red and orange light is scattered less, much more red and orange light travels inside a straight line from the flash light. It looks orange or red whenever you appear directly into the beam from the flash light.