4/5. The Balancing Trick. Tricks such as spinning a ball on the tip of yourfmger are difficult to get nght. Physicists Len Rsher and Jeff Odell talk to circus Performer Rod Laver about the best way to find a balancing "sweet spot". Then they reveal, with the help of mathematician Tom Mullin , how science lets us
Perform a modern version of the apparently impossible Indian rope-trick. Fordetails see Monday