Barrow's interest in mathematics and his small income made the position of Professor of Geometry at Gresham College, London appear very attractive when it became vacant in 1662.
Barrow ng interes sa matematika at sa kanyang maliit na kita na ginawa ang posisyon ng Professor ng geometry sa Gresham College, London lalabas talagang kaakit-akit kapag ito ay naging vacant sa 1662.