practice There are several reasons to suspect that the story of burning mirror is just a myth and Greeks of Syracuse never rally built such device. However the professor has different viewpoints. First,the article claims the technology for manufacturing a large sheet of copper with such specifications did not exist int the ancient world.The professor says an example shows that dozen of small flat polish coppers can arrange into parabolic shape and form a large burning mirror. Second, the speaker refutes the article by mention material of the boat.Thought the article stats wooden object took ten minutes to set the object on fire,the professor argue that there's other material that makes waterproof,catch fire quickly.It spread to wood so it can be an advantage weapon. Third, while he article indicate a burning mirror does not seem like an improvement on a weapon that they already had flaming arrows,the speaker points out that burning mirror is more surprised than flaming arrow, because burning mirror just see the mirror and suddenly fired.