Honk your horn with L3, or even better, bribe the police chief, steal a police car, and turn on the siren with L3.
While playing, hold the L3 button and press Circle, Circle, Square, Square, X, Triangle, then Triangle.
The exact fulfilment of this condition requires the solution of a transcendental equation; but it may be fulfilled with accuracy sufficient for practical purposes by using, instead of (32 B) the following approximate equation: L nearly = 2C +ir(ri +ri) + (Ti rz)2/c. (~l3)
To Kolliker,ll Gegenbaur, 12 and more recently Spenger, l3 amongst German anatomists, we are indebted for epoch-making researches of the same kind.
L i =objective, L2 L3 = eyepiece of the Ramsden type.