1. LENSE

2. ¿WHAT IS A LENSE?
An optical lens, its a transparent body of glass, crystal or plastic that has the capacity to refract the light and to form an image. The lenses are objects limited by two surfaces, of which at least one is curved, doing that the light that affects on it in parallel is refracted to the focal plane.

3. Examples of lenses

4. How does it work?
People don't know exactly how they work, many people say that "they" "extend" or "bring the objects over", which happens is that these increase the angle of vision and we estimate the size or distance of an object is for the angle of vision, because of it it is that you sew very big they meet small to big distances.

5. Now we are going to take differents lenses to demostrate the experiment.

6. BY ÚRSULA DÍEZ SUÁREZ AND INÉS FERNÁNDEZ BUZNEGO