Luffy: Hey Usopp, what are you doing?
Usopp: I'm building a new weapon!
Luffy: Cool, how does it work?
Usopp: It's made of glass. When light hits it, you can hit your opponent
defeat with unimagined powers.
Luffy: Awesome, explain!
Usopp: Well, it ... uh ... well, I, uh ...
Luffy: Human, Usopp, you can explain it a hundred times.
Usopp: All right. So when light hits the surface, it penetrates
through and is refracted, that is, the light bundles are redirected in a different direction. Then the light inside has a more converging path. When the light bundles emerge again, they are refracted again towards the perpendicular, as well as when entering the material. As a result, the light bundles are refracted converging even more strongly and meet at the focal point at a distance of the focal length.
Sanji: * since 2minuteskücheseiundnixkapier * huh? * drop *
Luffy: Man Usopp, then your new, oh so great weapon is just that
an ordinary convex lens.Zorro: * been sitting in the kitchen for a long time and overruffy * huh?
Usopp: I beg your pardon? * drop *
Luffy: It's just a magnifying glass!
All: * drop * ...
Luffy: Sanji, I'm hungry! Make something to eat! * roar *
All: * fall over *