This is yet another example of a manuscript of a heat ray device used to set ships from a distance to combust into flames. It is said that there was a quick burst of light and the ships wood was set to blaz instantly. It is a disservice to call this a mirror, a mirror is the simplest of reflective not amplification of heat. Even heat ray may not describe these ancient plasma lasers. LEONARDO DA VINCI – Studies of reflection in burning-mirrorsLeonardo da Vinci manuscripts Codex ArundelCodex Arundel (BLL), c. 88r© 2004 IMSS Piazza dei Giudici 1 50122 Florence ITALY