Talk:The Path to Whitestone/@comment-50.206.40.2-20171012144642/@comment-27804051-20171012173036

If I remember right, earlier in the episode Percy said that he wanted to try and build an Archimedes Death Ray, which is a device that (supposedly) uses mirrors to focus a beam of light into what is essentially a laser. Percy's attempt at building it failed, and then Tiberius decided that he wanted to give it a try.