As he wished, Archimedes' tombstone is marked with the figure of a sphere enclosed by a cylinder and the 2:3 ratio of their volumes. Archimedes Timeline c. 287 B.C.

Finally, Archimedes proved the volume of a sphere is two-thirds the volume of a circumscribed cylinder. He considered this his greatest accomplishment and asked that a representation of a sphere ...

Archimedes wrote about harnessing the Sun’s energy to create a death ray. And Sener wanted in. Sener has since earned multiple medals for his attempt to bring the ancient device to life.

Scientists have speculated about how Archimedes’ death ray purportedly harnessed sunlight to burn ships. Now, a teen may have evidence the device was plausible.