Experiment of light

I am going to do an experiment with a laser pointer.

Materials:
- A spray.
- A laser point.

We can see the ray of laser light.
Why does this effect happen?
This effect is produced by spray droplets that reflect in the laser light along the entire ray of light.


First I will give an example of a machine using a laser.

Video

Now I am going to demostrate this effect.

Video