Great Moments In Science Folgen

Our modern periodic table has 118 known chemical elements. About 94 of them occur naturally and the rest were manufactured by us. An element is a pure substance made of atoms that have the same numbers of protons in their central nucleus. What does an atom look like, and where are these protons?

Dr Karl still has more to tell us about the first known computer - this week it's Part 3. After its discovery it took a little while to clean up - and for the conservators to see what was on the inside. They still didn't know what it was meant to do.

Going deeper into the Antikythera Mechanism - a box with 30 bronze gears inside connected to three dials outside. It predicted the movements of a bunch of astronomical data. But let's start with eclipses of the Sun.