5 Numbers

Simon Singh uncovers the mathematical, social and scientific history of five numbers.

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Episodes

EpisodeTitleFirst
Broadcast
RepeatedComments
01Zero2001092520020311

He begins with zero, from the zeroes of the mathematicians to the void of the philosophers.

02Pi2001100220020312

He looks at pi - the ratio of a circle's circumference to its diameter.

03The Golden Ratio2001100920020313

He explores the secrets of the golden ratio, 1 to 1.6, which turns up throughout science, maths and nature.

04I2001101620020314

He considers the mysterious imaginary number i, the square root of -1.

05 LASTInfinity2001102320020315

He concludes his investigation with a look at infinity.