Season
Think of a Number - Season 3 Episode 2 The Science of See-through Sand
6.50 30 minutes He cooks, looks, hits, breaks and bends... glass. See some glass over 3,000 years old, a teardrop that goes with a bang and a singer who has a smashing time. Meanwhile, see if you can see through this one. Divide a clock face with two straight lines so that the numbers in each part are equal.
