first the reading brings up the idea that Greeks did not possessed the technology that was needed to make such a large curved copper sheet and explains that for using a sheet as a weapon like burning mirror, it has to be enormously large which was impossible for Greeks to build. On the contrary, the lecturer underlines the fact that for having such device, combining smaller piece of sheet made by copper was enough to make
first the reading brings up the idea that Greeks did not possessed the technology that was needed to make such a large curved copper sheet and explains that for using a sheet as a weapon like burning mirror, it has to be enormously large which was impossible for Greeks to build. On the contrary, the lecturer underlines the fact that for having such device, combining smaller piece of sheet made by copper was enough to make