Proyector de bacterias

In this work a water drop was used to get amplified images of the micro organisms we have in our mouth. By pointing a laser beam on a water drop we can obtain an amplified image of the tiny things that drift inside the drop. The drop plays the role of a lens like a magnifying glass and thing that are invisible for a naked eye can be observed with this cheap device. The materials needed are a syringe, laser pointer and water. A sheet of paper can be used as a screen to project the image. To provide the micro organisms we can use a needle to grasp our teeth and then touch the water drop with the needle tip.