"I think it was just schoolboy naivety. I didn't believe there couldn't be a solution."

Shouryya Ray has been hailed a genius after working out the problems set by Sir Isaac Newton.

The schoolboy, from Dresden, Germany, solved two fundamental particle dynamics theories which physicists have previously been able to calculate only by using powerful computers.

His solutions mean that scientists can now calculate the flight path of a thrown ball and then predict how it will hit and bounce off a wall.