In our science lessons we are learning about Light and how we see. This week we were learning about the law of reflection and that this is used to make periscopes. We found out that periscopes were used for a variety of purposes such as: on submarines to see above the water line, in WW1 to see above the trenches and for the Queen’s coronation as there were so many people on the streets the periscopes were used to see what was happening if you were at the back of the crowd. On a smooth surface the light ray is reflected at the same angle as it hits the surface this is how mirrors are used to see an image above your sight line. We had a lot of fun making the periscopes but they only worked if you had the mirrors at a 45 degree angle. Here are some pictures of the different steps we went through to make our periscopes.