They predicted that this transition to turbulence would occur after the system had developed oscillations with at least three distinct frequencies.
In 1971 a Belgian physicist and a Dutch mathematician together predicted that the transition to chaotic turbulence in a moving fluid would take place at a well-defined critical value of the fluid's velocity (or some other important factor controlling the fluid's behavior). They predicted that this transition to turbulence would occur after the system had developed oscillations with at least three distinct frequencies. FTP, name either one of these two pioneering chaoticians.
In 1971 a Belgian physicist and a Dutch mathematician together predicted that the transition to chaotic turbulence in a moving fluid would take place at a well-defined critical value of the fluid's velocity (or some other important factor controlling the fluid's behavior).
David {Ruelle} or Floris {Takens}